Federal authorities are leading an investigation into a bomb that was attached under a Tucson man’s vehicle in the parking lot of a Hooters in Marana.

“The bomb components will be analyzed to make a determination of construction and explosive filler,” said Tom Mangan, an Alcohol, Tobacco, Firearms and Explosives spokesman based in Phoenix.

Investigators will also analyze the components in search of DNA, Mangan said.

The explosive device was sent to the agency’s regional laboratory outside of San Francisco, Mangan said.

The bomb, which was found Sunday by the victim hanging under his SUV after he left Hooters, 4385 W. Ina Road, was reported to the Marana Police Department shortly after 4 p.m.

Marana Police evacuated and secured the area and called in the Pima County Regional Bomb Squad, which neutralized the bomb, Mangan said.

“The procedure was executed flawlessly by the bomb squad,” said Mangan.

ATF was also called to the scene, which was secured until 1 a.m. Monday.