Paul Razo was taken into custody May 10, according to the Los Angeles County Sheriff's Department, whose Special Victims Bureau was conducting the investigation.
A total of eight counts of lewd acts with a child have been filed by the L.A. County District Attorney's office.
The alleged incidents occurred between 2007 and 2016, when Razo lived in the Covina area and was an active LAPD officer, a news release said.
Two of Razo's alleged victims are his relatives.
His bail has been set at $2.5 million and he currently remains in custody.
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"Based on the nature of the allegations and Mr. Razo's access to children, detectives believe there may be additional unidentified victims," the statement said.
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Anyone with information about the case is urged to contact the sheriff's Special Victims Bureau toll-free tip line at (877) 710-5273 or by email at specialvictimsbureau@lasd.org.