A tanker truck carrying 1,000 gallons of fuel crashed on Interstate Highway 880 in Oakland on Thursday afternoon and blocked multiple lanes of traffic, according to the California Highway Patrol.

The crash happened at about 12:45 p.m. and blocked the three left lanes of northbound traffic on Highway 880 near 23rd Avenue, CHP Officer Kevin Bartlett said.

A Sig-alert was issued at about 1 p.m. with no estimate on when the lanes would be reopened.

Bartlett was unable to comment on the extent of the truck driver’s injuries, but said an ambulance was called.

No other injuries were reported.