BOSTON -- Investigators asked for help from tattoo artists who may have inked former New England Patriots tight end Aaron Hernandez, saying they could help in the prosecution of a double murder Hernandez is charged with committing in 2012. The Suffolk district attorneys office stressed that the tattoo artists are considered witnesses, not suspects, and "may have made observations of evidentiary value." Hernandez is charged in three killings. He is scheduled to be arraigned May 28 on two counts of murder for allegedly shooting two men in Boston in 2012, prosecutors said Wednesday. Authorities have not said if there is any connection between those two slayings and the 2013 shooting death of Odin Lloyd, a semi-pro football player whose body was found in an industrial area near Hernandezs home in North Attleborough. Lloyd was dating Hernandezs fiancees sister. Hernandezs lawyers have said that their client looks forward to his day in court. He is being held without bail. Authorities said they hope to speak with the artist or artists who did specific tattoos on Hernandezs right forearm between February 2012 and June 2013. They didnt describe which of his tattoos they are referring to. Both of Hernandezs arms are covered with tattoos, and photographs of his right forearm show inked stars, words and other designs. "Were intentionally limiting our statements so as not to influence any potential observations by tattoo artists," said Jake Wark, a spokesman for Suffolk District Attorney Dan Conley. "We want unvarnished and unrehearsed information." Authorities specifically mentioned several places in their quest for tattoo artists: Hermosa Beach, California; Bristol, Connecticut; Palm Beach and Miami, Florida; Massachusetts; and Rhode Island. They stressed, however, that they are open to speaking with anyone anywhere who did tattoo work on Hernandez during the time period. Hernandez, 24, has been indicted on two counts of first-degree murder and other offences in the July 2012 killings of Daniel de Abreu and Safiro Furtado in Boston. A third man was wounded in that attack, while two others escaped unharmed. Hernandez and an associate had an "encounter" in a city nightclub with the victims before the shooting, prosecutors said. After the men left, Hernandez followed in an SUV and pulled up alongside the men as their vehicle was stopped at a red light, and opened fire, Conley said. Stitched Tampa Bay Buccaneers Jerseys . -- Cam Newton pranced into the end zone, placed his hands over his chest and did his familiar Superman pose. Authentic Tampa Bay Buccaneers Jerseys .com) - The Oklahoma City Thunder will try to get back on track Monday night when they welcome the Minnesota Timberwolves to Chesapeake Energy Arena. http://www.cheapbuccaneers.com/ . 5 Trade Deadline is drawing closer and teams will be deciding on whether to buy or sell. Wholesale Tampa Bay Buccaneers Jerseys . The Asheville, N.C. native, who signed as a free agent with the CFL club last May, didnt see any action with Edmonton this season after opening the year on the injured list. Tampa Bay Buccaneers Jerseys Outlet . - The Tampa Bay Buccaneers are going to meet with Richie Incognito to determine if one of the central figures in the Miami Dolphins bullying scandal can help their struggling offensive line.JEREZ, Spain -- Formula Ones sweeping rule changes may be contributing to defending champion Red Bulls dismal start to the preseason. The smaller teams just dont see his troubles transferring into a major shift in the balance of power this season. F1 decided to overhaul its rulebook after the 2013 season, when Sebastian Vettel paraded his Red Bull to victory in the last nine races to win his fourth consecutive title. However, team bosses and chief engineers told The Associated Press that the move to more expensive turbo engines, as well as numerous other changes, will only reinforce the dominance of the front-runners who are better equipped to absorb the increased costs and have money left over to spend on other aspects of their vehicles. Many of those who help run the teams that rarely, if ever, reach the podium expect the gap between the top and bottom to only get bigger. Williams chief technical officer, Pat Symonds, said the best way to encourage parity was not through change, but rather by creating "stability" that would level the technological playing field. "If you stir up the rules to make it economically more difficult, absolutely no, you are not going to make the racing closer," he said. Symonds spoke to the AP in Williams hospitality tent pitched at the end of a row of the other teams luxurious motorhomes at the Jerez track, where preseason testing is being held until Friday. Symonds joined Williams this season from struggling Marussia to help in what he called a rebuilding of the team, whose ninth and last constructors title came in 1997, last grand prix victory was in 2012, and which earned just five points last year. "Changing to the 2014 power unit and then running the 2014 power unit is very significantly more expensive than it was prior," Symonds said. "Now that hits the smaller and the mid-sized teams much harder than it does the big teams." Force India deputy team principal Bob Fernley said his team and others agreed. "The disparity between the teams that are lower down the grid annd the ones at the front is also connected to how much you can spend on development," Fernley said.dddddddddddd "We are all having to spend roughly 100 million euros ($135.74 million) to go racing; thats to build a car, to go to each of the 19 races. So whatever youve got above that is your development. So if youve got 10 million and Ferrari have got 100 million, theres always going to be a difference." Besides switching to a 1.6-litre V6 turbo engine from last years 2.4-litre V8 engine, the rule changes focus on boosting cars energy recovery systems, and alter their fuel limit, weight, and body. F1 also decided to award double points to the seasons last race to keep the title race alive, and fans and TV audiences interested. Caterham team principal Cyril Abiteboul called the double points decision an "artificial" fix to try to increase competition in appearance, while not in reality. Abiteboul said he supported the move to push innovation in F1 so that it could continue its mission of "preceding the automobile industry." But he said applying so many changes in one year instead of over two or three hurts smaller teams like Caterham, which didnt win a point in its first two seasons. For both Fernley and Abiteboul, the new regulations put more importance on the engine manufacturers: Renault (Red Bulls engine maker), Mercedes and Ferrari, who in addition to having their own factory teams, also sell engines to the other eight teams. For a smaller team "to win a race I think is a little bit extreme," Abiteboul said. "That would really only happen if one of the three engine manufacturers we have this season has a real performance advantage on the other two, firstly, and even if that happens I would expect that the factory team of that engine manufacturer would have an edge." Although Red Bull has managed just 14 laps through three days of testing due to engine problems, it should still be in fine shape come season end. The season begins with the Australian Grand Prix on March 16. 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