Belgian Prime Minister Charles Michel has resigned amid pressure on his government over his support for the UN global pact on migration.

The pressure increased after Michel lost the backing of coalition partner nationalist New Flemish Alliance over his support for a UN migration deal signed in Marrakech last week. His move follows angry demonstrations in Brussels against the UN pact.

He announced his resignation on Tuesday following a debate in parliament in which opposition parties refused calls to support his minority government. While Belgium was due to go to the polls next May, his decision now raises the possibility of early elections.

Michel, 42, took office in October 2014 after forming a right-wing coalition, becoming at 38 the country’s youngest prime minister since 1841.