The House of Representatives could vote in the coming days on legislation backed by Republican and Democratic lawmakers to broaden U.S. sanctions on North Korea, House leaders said on Thursday, a day after Pyongyang announced it had tested a hydrogen nuclear device.

Republican House Speaker Paul Ryan did not provide a timeline for the vote on the long-delayed legislation but a congressional source said it was expected as soon as Monday.

Nancy Pelosi, the House Democratic leader, told reporters that Republicans, who control the House, were likely to move a bill as early as next week and that Democrats would support it. She said there was strong backing in both parties for the legislation.