MILL VALLEY (CBS SF) — Authorities in Marin County confirmed Friday there was a power outage caused by an unknown issue affecting customers in Mill Valley.

Mill Valley police tweeted about the outage at around 9:40 a.m., saying that PG&E officials reported the estimated time to restore power was 3 p.m. The cause of the outage is currently unknown.

READ MORE: UPDATE: Estrada Fire Sparked by Cal Fire Controlled Burn Near Watsonville Now 10% Contained

The PG&E power outage webpage showed approximately 1,500 customers without electricity from two separate outages in Mill Valley.

READ MORE: State Health Officials Urge Vaccinations as Flu Season Begins in Earnest


Mill Valley power outage map (PG&E)

MORE NEWS: Multi-Vehicle Accident Slows Traffic on Northbound I-880 in Oakland

Earlier this week, a power outage affecting more than 6,000 PG&E customers in Marin County was caused by a bird that flew into electrical equipment, according to the utility.