A member of an anti-gang unit in southwest Riverside County, Calif., discovered an explosive device near his car, bringing the number of attacks against the unit to three in the past two months.

The officer with the Hemet/San Jacinto Gang Task Force discovered an explosive device attached to his vehicle on Friday. He called for back-up after discovering a threatening device next to his car, parked outside of a store. The intersection was closed off, while a bomb unit disabled the instrument, FOX News reports.

In late February, an anti-gang officer was nearly struck with a bullet from a booby trap attached to the gate of the agency's offices. Earlier in the year, authorities discovered a gas line that had been redirected into the task force's offices.

A $100,000 reward has been offered for information leading to the arrest of the individuals responsible, according to the Hemet Police Department .

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