SAN FRANCISCO (MarketWatch) — The Massachusetts funeral director who is trying to find a cemetery to accept Tamerlan Tsarnaev’s body says an autopsy shows the suspected Boston Marathon bomber died of bullet wounds suffered during a shootout with police and blunt-force injuries when he was run over by a car driven by his fleeing brother, according to media reports Saturday.

The official report of the autopsy on Tsarnaev, 26, of Cambridge, Mass., hasn’t been released, but the death certificate listed those causes, media reports said, quoting Peter Stefan, the Worchester, Mass., funeral director who is handling arrangements for Tsarnaev’s family. Stefan said he has looked without luck for burial plots in cemeteries in Massachusetts, Connecticut and New Jersey, according to media reports.

Tsarnaev and his brother, Dzhokhar, were being sought as the suspects who detonated two homemade bombs near the finish line of the Boston Marathon on April 15, killing three people and wounding 260, when they got into a firefight with police in the early-morning hours of April 19.

Police said Tamerlan Tsarnaev was wounded by gunfire and run over by his brother as the brothers attempted to escape. He was pronounced dead at area hospital.

Dzhokhar Tsarnaev, 19, who also had been wounded in the shootout, was arrested the night of April 19. He has been charged in federal court with crimes that carry a possible death sentence. He is being held at a federal medical detention center in Massachusetts.

As federal and state investigators continue their investigation of the brothers, who are ethnic Chechens, three of Dzhokhar Tsarnaev’s friends have been arrested on federal charges of attempting to destroy evidence or of making false statements. Dzhokhar Tsarnaev was a naturalized U.S. citizen and his brother a legal immigrant who had married a U.S. woman.

Investigators have said it appears the Tsarnaevs acted on their own and weren’t connected to any Islamic terrorist group.