(CNN) -- A military judge ruled Thursday that Nidal Hasan, the Army major accused in a 2009 mass shooting at Fort Hood in Texas, will go on trial in June, after his attorneys requested the delay.
Lt. Col. Kris Poppe, Hasan's lead attorney, said the request is "purely a matter of necessity of adequate time for pretrial preparation."
Hasan is charged with killing 13 people and wounding dozens more on November 5, 2009, in a killing spree at a medical building at Fort Hood, Texas, where soldiers were screened before deployment to Iraq and Afghanistan.
His court martial, in which prosecutors are seeking the death penalty, is set to begin June 12. It had previously been scheduled to begin March 5.
Hasan has not entered a plea.
CNN Pentagon Producer Larry Shaughnessy contributed to this report