Canadian authorities have arrested a California man who was on the FBI's "Ten Most Wanted" list for alleged sex crimes against children, the FBI said.

Richard Steve Goldberg, 61, of Long Beach, was arrested Saturday in Montreal at an address provided by a tipster who recognized the fugitive from the FBI's Web site, said Laura Eimiller of the FBI in Los Angeles. He had been on the run for about six years, she said.

Long Beach authorities claim Goldberg engaged in sexual acts with girls under the age of 10 in 2001. He also produced images of the sex acts, which were later found on his computer, according to the FBI.

Goldberg was being held by Canadian authorities for violating Canadian immigration laws and was scheduled to be in court on Monday, Eimiller said.

Goldberg was expected to be extradited to the United States. He will face state and federal charges, including sexual exploitation of children, unlawful flight to avoid prosecution, six counts of lewd acts upon a child and two counts of possession of child pornography, Eimiller said.