WESTON, Fla. (January 3, 2010)--A tip to the TV show "America's Most Wanted" has led to the arrest of a Florida man who’s suspected of gunning down four family members at a Thanksgiving dinner, police said.

Jupiter, Fla. Police Sgt. Scott Pascarella said U.S. Marshals and Monroe County, Fla. deputies arrested Paul Merhige Saturday night at a motel in the Florida Keys.

He was the focus of a massive manhunt that included a $100,000 reward.

He’s accused of killing his twin sisters, 79-year-old aunt and 6-year-old cousin at a family gathering in Jupiter, an affluent community about 90 miles north of Miami.

Police say he faces four counts of first-degree murder.

He was ordered held without bond, Sunday.

Merhige checked into the motel Dec. 2, using a false name and address, authorities said, and had the same car that had been a focus of manhunt, but police say it was covered up.