A probation search at a Sonora residence on Monday led to three arrests, including one for possession of a pipe bomb.

Tuolumne County Sheriff’s Office personnel and deputy probation officers, which make up the High Risk Supervision Team, searched the residence Monday afternoon at the Starr Mobile Home Park on the 20100 block of Jamestown Road in Sonora.

Four people were at the home, a mother and son who live there and two other men.

The mother and son are on county probation for narcotics-related charges, a press release stated.

During a search of the son’s room, the suspected pipe bomb, an expandable baton-type weapon and drug paraphernalia (glass pipes and tinfoil with black residue on it) were found.

The bomb was found in a closet of the son’s room, Sgt. Deborah Moss said.

Bomb squad personnel from the Calaveras County Sheriff’s Office responded to the residence after the discovery of the pipe bomb, which was cylindrical in shape, wrapped in black tape and appeared to be affixed with a blue wick.

Bomb squad personnel “rendered the destructive device safe,” a Tuolumne County Sheriff’s Office press release stated.

The Tuolumne County Sheriff’s Office does not have a bomb squad and relies on the Calaveras County Sheriff’s Office for assistance.

Moss said she did not know how the bomb was rendered safe by the bomb squad. A common practice with pipe bombs is for the bomb squad to use additional explosives to destroy the device.

Joseph Michael Cepeda, 22, was booked on suspicion of possession of a destructive device, possession of a dangerous weapon and misdemeanor charges possession of a controlled substance paraphernalia.

Cepeda on Tuesday remained in the Tuolumne County Jail on $40,000 bail.

Armando Rodolfo Gonzalez, 23, of Tuolumne, who was also at the residence, was found to be in possession of drug paraphernalia and was charged with a misdemeanor. Gonzalez was also arrested on a felony probation violation for bringing drugs into jail as well as a probation violation for vehicle theft.

Brian Allen Young, 25, of Jamestown, was booked on possession of fireworks without a permit after he was found to be in possession of M-80-style fireworks.

The Tuolumne County Sheriff’s Office ordered the detonation of a suspicious ice chest in Eproson Park in August 2017 after PVC pipes filled with liquid and capped with duct tape were found inside. After the Calaveras County Sheriff’s Office bomb squad detonated the ice chest in a controlled explosion, it was determined the pipes had been filled with water to be used as makeshift ice packs.

The bomb squad officials also detonated a 2-inch metal pipe believed to be a pipe bomb found near the shore of Cherry Lake in September 2016.

Contact Giuseppe Ricapito at (209) 588-4526 or gricapito@uniondemocrat.com . Follow him on Twitter @gsepinsonora.