The Associated Press reports: Former Detroit Pistons center Bison Dele and his girlfriend were reported missing during a boating trip in the Pacific Ocean, the woman's stepfather said Monday.

Relatives last heard from Dele, girlfriend Serena Karlan and three members of Dele's boat crew two months ago, said Karlan's stepfather, Scott Ohlgren of Boulder, Colo.

Dele's boat was scheduled to sail from Moorea, Tahiti, to Honolulu and was last reported as being seen near Tahiti, Ohlgren said.

Dele, formerly known as Brian Williams, played on the Chicago Bulls' championship team in 1996-97. He later signed with the Pistons, where he played for two seasons before retiring. He played at Arizona in 1990 and 1991.

Before his disappearance, Dele had contacted his bank once a month. The bank hasn't heard from Dele in two months, Ohlgren said.