HOUSTON (AP) _ Greek shipping magnate Stavros Niarchos is in Houston's Methodist Hospital for undisclosed treatment, hospital officials said Thursday.

Niarchos, 81, arrived Oct. 7 at the hospital, which is part of the Texas Medical Center. He is listed by hospital officials as a ''no information patient.''

''He's still here. He doesn't want his condition released or anything,'' spokeswoman Michele Smith said.

She said she could provide no indication of any illness or when he might be released.

Methodist is the base for heart surgeon Michael DeBakey, but it was not known if DeBakey was involved with Niarchos.

Niarchos is a native of Athens but lives in Paris. His shipping company operates out of London and New York. He was once married to Charlotte Ford, great-granddaughter of the founder of Ford Motor Co.

1-90 1416EDT