DUP MP for north Belfast Nigel Dodds has been expelled from the House of Commons chamber.
It came after he accused Northern Ireland Secretary of State, Theresa Villiers, of “deliberate deception” about the behaviour of the Parades Commission.
Mr Dodds is the leader of the DUP MPs at Westminster.
Speaker John Bercow, repeatedly asked Mr Dodds to withdraw his comments which he said were unparliamentary.
When the DUP MP refused, the Speaker “named” him, expelling Mr Dodds from the Commons chamber for the day.
The DUP MP’s accusation against Ms Villiers followed the Parades Commission’s decision to place restrictions on a planned Orange Order parade in North Belfast on Friday, 12 July.
The parade is due to pass a sectarian interface at the Ardoyne shops on Belfast’s Crumlin Road.
The commission ruled that the marchers can walk past the shops on Friday morning, but cannot hold a return parade through the area on Friday afternoon.
In recent years, the nationalist Ardoyne area has been the scene of serious rioting, with protesters clashing with police, in the aftermath of the return leg of the parade.
Mr Dodds has been MP for north Belfast since 2001.