Days after he returned home, Ugandan authorities are detaining without charges a weightlifter who went missing in Japan, where he had hoped to compete in the Tokyo Olympics, and ignoring pleas from his family for his release.

Julius Ssekitoleko, 20, has been in police custody since Friday, when he arrived home from Japan, where he was reported missing from an Olympic training camp for five days.

Ugandan officials said they were investigating how he had flown to Japan with his coach even though he didn’t qualify to be part of the country’s Olympic team.