CHINO, Calif. (AP) _ A moderate earthquake hit San Bernardino County east of Los Angeles Friday night, but no injuries or damage were immediately reported, officials said.

The tremor, at 11:17 p.m., measured 4.0 on the Richter scale and was centered three miles southwest of Chino, said Bob Finn, a spokesman for the seismic laboratory at the California Institute of Technology in Pasadena.

The epicenter was near the same location of a 3.2 magnitude temblor, which hit Thursday at 5:51 a.m., Finn said.

''We felt something more like a sonic boom than a quake,'' said Chino police Lt. C.B. Stueland. ''It was just a one-shot jolt and that was it.''

Stueland said the Police Department 35 miles east of downtown Los Angeles didn't receive a single call following the tremor.

Sgt. Bill Strickland of the Riverside County Sheriff's Department said he felt the quake in his third-floor office.

''We felt it here, but this building is so old and rickety we feel any kind of tremor,'' Strickland said. ''But we haven't had any calls from anyone wanting to report injuries or damage.''