SAN BERNARDINO ( — Authorities have arrested a 21-year-old Highland man accused of committing lewd acts against two young girls.

San Bernardino County Sheriff’s detectives were contacted Thursday regarding lewd acts committed against two juveniles.

Detectives began investigating and identified the suspect as Matthew Alva.

Investigators determined Alva “has lived with on occasion, and cared for the two juvenile victims over the past five years,” according to a SBSD spokesperson.

“Since 2010, both victims have been sexually assaulted by Alva multiple times. These crimes occurred while the victims were in the Cities of San Bernardino, Rialto and most recently in Muscoy,” the spokesperson stated in a press release.

Detectives contacted and interviewed Alva Friday. He was subsequently arrested and booked for lewd and lascivious acts with a child.

His bail was set at $250,000.

Alva is expected to be arraigned in San Bernardino Superior Court Tuesday.

The investigation is ongoing.

Detectives urge anyone who may be a victim to contact Central Station, Detective Marshall at (909)387-3545. Anonymous callers may call the We-tip Hotline at 1-800-78-CRIME (27463) or leave information on the We-Tip Hotline online.