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 attorney's 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. 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 Hernandez's home in North Attleborough. Lloyd was dating Hernandez's fiancee's sister. More...