VENTURA, Calif. (AP) — An attorney was convicted Monday of trying to extort $310,000 from Erin Brockovich and her boss, Ed Masry.

John Reiner was found guilty of two counts of attempted extortion and one count of conspiracy to commit extortion. He faces up to four years in prison when he is sentenced May 2.

Masry, an attorney, and Brockovich, his assistant, won $333 million in compensation from Pacific Gas and Electric Co. for 650 residents of the small desert town of Hinkley, where water was found to be contaminated with the carcinogen chromium 6.

The story was made into the hit movie "Erin Brockovich," for which Julia Roberts, portraying Brockovich, won an Oscar last month.