Anti-government protesters demanding the resignation of Nepal's prime minister have clashed with riot police near Katmandu's airport.

The protesters tried to block Baburam Bhattarai's motorcade as he returned home Monday from a U.N. conference in Brazil. Police beat them back with bamboo batons and shields. Protesters threw stones at the police. At least one protester was badly injured.

Bhattarai has been leading a caretaker government since last month. Opposition parties want him to resign so a new government that includes representatives from all major parties can take over and conduct elections in November.

Police said they detained 34 protesters.