Nepal imposed a travel ban on the former police chief yesterday as a government commission investigates his role in a deadly crackdown during the September uprising that toppled the government.

Chandra Kuber Khapung, who retired yesterday, was police chief during the youth-led protests that erupted on September 8.

The order "bans his foreign travel with effect from today and prevents him from leaving the Kathmandu Valley without the commission's approval", commission member Bigyan Raj Sharma said in a statement.

Khapung "will be required to appear before the commission at any time", it said.