A Tewksbury man involved in a fatal crash on Route 38 in April, turned himself in to police Monday morning on an outstanding warrant.

Edward J. Rivera, 43, 553 Rogers St., Tewksbury, had failed to appear in Lowell District Court on Sept. 27 on charges of driving with a revoked license. A bench warrant was immediately issued for Rivera's arrest.

Tewksbury Police records indicate that they had tried, unsuccessfully, to execute the warrant last week. But Monday morning, just after 8 a.m., Rivera walked into Police Headquarters and turned himself in.

The charge for driving with a revoked license was filed by Tewksbury Police  after Rivera was seriously injured in a head-on accident on April 11, 2011 that claimed the life of 40-year-old Stephen Allder of Medford.

According to investigators working out of the office of District Attorney Gerry Leone, Allder was travelling north on Route 38, just before 7:30 a.m. on the morning of April 11, when the 2003 Dodge Stratus he was driving crossed over into the southbound lane and crashed, head-on, into a gray Ford pick-up truck driven by Rivera.

Rivera sustained severe but non-life-threatening injuries in the crash. Allder sustained massive trauma and died from the injuries. The accident report does not offer an opinion on what caused Allder's vehicle to cross into the wrong lane.

District Court documents did not indicate why Rivera's license had been revoked.

A criminal complaint was filed on Aug. 22 and Rivera was summonsed to appear in court for arraignment on Sept. 27. Rivera was taken to Lowell District Court and arraigned on Monday.