Two men were arrested Monday on attempted murder charges after allegedly leaving a pipe bomb that exploded on the doorstep of a residence in Suisun City, authorities said.

Thomas Capenhurst, 33, Dixon was arrested on suspicion of using a destructive device with the intent to commit murder, while Robert McGraw, 20, Fairfield, was booked on same the charges as well as possession of a destructive device.

Officers were flagged down Saturday by a citizen to a home on the 1000 block of Bluejay Drive after a device exploded on the doorstep, according to the Suisun City Police Department. The blast reportedly caused major damage to the front door area of the residence.

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Multiple people were inside the home when the explosion occurred, but no injuries were reported, police said.

Search warrants were issued to several homes in Fairfield, Dixon and a Benicia business following a joint investigation between police, the Bureau of Alcohol, Tobacco, Firearms and Explosives and the FBI.

During the search, more pipe bombs were reportedly discovered in Fairfield and were safely recovered by the ATF bomb squad.

Capenhurst and McGraw were booked at the Solano County Justice Center and are being held without bail. Their next court date is 1:30 p.m. Wednesday.