Tijuana, Mexico: Police have arrested two women for allegedly holding an American man captive in his Tijuana home and forcing him to write them checks.

Police went to the home Saturday after receiving an anonymous tip that 65-year-old Richard Mattson was being held captive there, police spokesman Ernesto Alvaro said. Officers found Mattson inside and arrested the two women.

Alvaro said the women took advantage of "mental lapses" suffered by Mattson, holding him captive for four days, forcing him to write checks for them and selling his furniture. He said the women refused to allow relatives who called the apartment to speak with Mattson.

Mattson, of Tacoma, Washington, said the women stole more than $4,000 from him. He declined to say how he met the women, whom police described as sex workers.