The United Kingdom has told its citizens not to be involved in political activities in Nepal, after a Briton was held on Monday for attending an anti-constitution protest in Kathmandu.

“If you’re involved in any political activities in Nepal you may be liable to penalties including deportation and/or a fine,” said the UK government in a travel advisory issued for its citizens.

The move comes on the heels of Nepal Police arresting Martin Travers, a British national, for participating in a demonstration organised by the Madhesi and Janajati communities. The police handed him over to the British Embassy in Kathmandu on Tuesday.

Earlier, the Department of Immigration had sent back a Canadian national, Robert Penner, for tweeting in favour of Nepal’s ethnic movement.

“Disagreements arising from Nepal’s new constitution have led to protests, rallies and strikes occurring frequently throughout Nepal,” read the travel advisory issued by the Foreign and Commonwealth Office of the UK, advising its citizens to monitor the local media and follow the advice of the local authorities and the tour operator.

“British government officials in Nepal may sometimes defer travel on official business, depending on the security situation at the time. Transport and public services may be disrupted at short notice.”

Protests can occur at short notice and turn violent, the UK government warned. “Clashes between protesters and police may occur anywhere. Stay away from protest areas.”