EUREKA, Mont. (AP) — A Maryland man who played basketball at a Vermont college is missing and presumed drowned in a northwestern Montana lake, Lincoln County authorities said.

Mamadou N’Diaye, 18, jumped off a boat on the east side of Lake Koocanusa on July 24 and did not surface, the sheriff’s office said. His body has not been located. The lake is west of the town of Eureka near the Canadian border.

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N’Diaye is from Prince George, Maryland, and had played his freshman season at Northern Vermont University-Johnson, where he was studying engineering.

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“My deepest condolences go out to Mamadou’s family. He made such a positive impact on our athletics and NVU communities in his first year,” NVU-Johnson assistant dean of athletics said in a statement on the team’s website. “My sympathy also goes to his teammates, and friends, coaching staff, faculty and staff close to Mamadou.”

Monday would have been N’Diaye’s 19th birthday, according to the university’s statement.

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