Oil from a Santa Barbara, California, pipeline spill spread more than 100 miles to Los Angeles County beaches, the pipeline company said.
Plains All American Pipeline said oil from its pipeline washed ashore as far away as Redondo Beach.
The Houston-based company and state officials said oil from the May 19 spill had reached Manhattan Beach, two miles north of Redondo.
Federal regulators and prosecutors are investigating the spill of up to 101,000 gallons of crude oil along the scenic shore. The reports confirm suspicions that the pipe was the source of tar that washed ashore in Los Angeles about a week after the spill.
Some of the tar came from other sources, such as natural seeps from the ocean floor, the company said.
At a state legislative hearing, Janet Wolf, chair of the Santa Barbara County Board of Supervisors, complained about the scarcity of information on the spread of the oil. Her staff was repeatedly frustrated trying to gather details on the test results from officials leading the spill response and cleanup, she said.