"We're heightening the alert," Dana told The Press-Enterprise. The caller said the attack would be in retaliation for the law enforcement sweep against the Vagos Motorcycle Club earlier this week.
The Riverside County Sheriff's Department has not been able to confirm the threat, Deputy Herlinda Valenzuela said.
About 30 members of the Vagos, California's largest motorcycle gang, were arrested in Riverside County on Wednesday, as part of a crackdown across the state and in Arizona, Nevada and Utah. The gang specializes in methamphetamine sales, identity theft and violence, Riverside County sheriff's Capt. Walter Meyer said.
Dana said someone he believes may have been a gang member tried to get into a news conference Thursday at the district attorney's office in Riverside. The person was turned away, he said, because he didn't have a press credential.
At that news conference, Dana, District Attorney Rod Pacheco, state Attorney General Brown and others announced a $200,000 reward for information leading to the arrest and conviction of those responsible for the Hemet-area booby traps aimed at officers in recent weeks.
First, a natural gas pipe was shoved through a hole drilled into the roof of the gang enforcement unit's headquarters. The building filled with flammable vapor but an officer smelled the danger before anyone was hurt.
Then, a ballistic contraption was attached to a sliding security fence around the building. An officer opening the black steel gate triggered the mechanism, which sent a bullet within eight inches of his face.
In another attempted booby trap attack, some kind of explosive device was attached to a police officer's unmarked car while he went into a convenience store.
Gang enforcement officers appear to be the target of the assassination attempts, though Dana noted the devices were indiscriminate by nature and could have killed any police or law enforcement officer.
A prevalent theory for the attacks is that Vagos members were angered when members of Hemet's anti-gang task force monitored them at a funeral in a church opposite the task force's former headquarters.
The incidents have shaken a close-knit police department already demoralized by steep budget cuts that last year saw its officer numbers slashed by a quarter to 68. Officers are checking under cars for bombs and scouting for other potential hazards.
"I would call the mood tense," Capt. Tony Marghis said. "Everyone is being very vigilant about their surroundings and the environment."
