JAKARTA: Brunei has arrested an Indonesian man en route to Saudi Arabia after authorities found bullets and what appeared to be an Islamic State (IS) group flag in his luggage, Indonesian officials said Thursday.

Rustawi Tomo Kabul, 63, was detained on Saturday in transit at Brunei airport after arriving from Indonesia, and claimed to be going on Umrah with a group from his home country, the Foreign Ministry in Jakarta said.

“The man was detained because of suspicious things found in his luggage, such as bullets and what looked similar to an ISIS flag,” said Foreign Ministry spokesman Arrmanatha Nasir, using an alternative name for IS.