Montreal police have arrested one of the most sought-after fugitives in North America after a tipster recognized the man from the "Ten Most Wanted" list on the FBI's website.

An anonymous tip led to the arrest of Richard Goldberg, a 61-year-old accused of sexually assaulting children in California.
(FBI)

Richard Goldberg, a 61-year-old accused of sexually assaulting children in California, was picked up early Saturday at an apartment in Dorval on Montreal's West Island, according to Erik Paradis, a spokesman for the Canada Border Services Agency.

It was initially reported that Goldberg may have been living there for several years, but Paradis told CBC News on Sunday "at this point it'd be truly speculative to say he has lived in Canada for a long time."

Goldberg was arrested "without incident" by a Montreal police SWAT team, Paradis said.

Police in Long Beach, Calif., allege that in 2001, Goldberg engaged in sexual acts with girls younger than age 10. He is also accused of producing images of the acts, which were allegedly later found on his computer.

Goldberg is expected to appear before an Immigration and Refugee Board in Montreal on Monday for a review to determine whether he will be detained, Paradis said. 

Depending on the circumstances of his case, there could be a request for his extradition from the U.S. government or Canadian officials could issue a deportation order, Paradis said.

Goldberg, who had been on the run for six years, faces U.S. criminal charges, including six counts of lewd acts on a child, and two counts of possession of child pornography, FBI officials said.

With files from the Associated Press