SAN DIEGO -- DNA tests are being done on blood from a catamaran that belonged to former NBA player Bison Dele, 10News reported.

Authorities in Tahiti think Dele, his girlfriend, and the boat's captain may have been murdered by Dele's brother, Miles Dabord, who was with them when they sailed for the South Pacific in May, 10News reported.

The three victims have been missing for three months, while Dabord remains on life-support equipment in a Chula Vista hospital after being found unconscious in Tijuana, Mexico, last week.