( CNN ) -- A judge has ordered Jared Lee Loughner to undergo a mental evaluation at a specialized facility in Springfield , Missouri , as soon as possible to help determine if he is competent to stand trial , according to the U.S. Attorney 's Office in Tucson , Arizona . Loughner , an Arizona man , faces 49 counts -- including murder and attempted murder -- related to the January 8 mass shooting in a grocery store parking lot . Six people were killed in the shooting and 13 others were wounded , including Arizona Rep. Gabrielle Giffords . Loughner 's defense attorneys argued that the suspect should not be moved to Springfield because he is `` 'seriously ill ' and that physically transferring him from Tuscon could worsen his mental state and disrupt counsel 's relationship with him , '' according to court documents . But U.S. District Judge Larry Burns sided with prosecutors stating in his order that he `` acknowledges that moving the defendant to Springfield for a relatively short period of time will be temporarily inconvenient for the defense team . But the inconvenience is unavoidable ... '' Burns said the mental evaluation should happen no later than April 29 . A competency hearing in the case has been scheduled for May 25 . Loughner is accused of killing John M. Roll , a federal district judge ; Gabriel M. Zimmerman , a staff member for Giffords ; Dorothy J. Morris , Phyllis C. Schneck , Dorwan C. Stoddard and nine-year-old Christina-Taylor Green . Loughner has pleaded not guilty to the charges . CNN 's Leslie Tripp contributed to this report .
Loughner 's attorneys say moving the suspect out of state could disrupt his mental state . The judge says the move is inconvenient but `` unavoidable '' and that he will have to make a decision on whether or not it violates his constitutional rights.