Turkey will not let a delegation of pro-Kurdish MPs enter the city of Cizre in southeastern Turkey, the interior minister said Thursday, despite fears of a humanitarian crisis caused by a military curfew there.

"We will not allow them (the Peoples' Democratic Party - HDP delegation) to go to Cizre," Interior Minister Selami Altinok told reporters in Ankara, adding that the curfew would be continued.

HDP co-chairman Selahattin Demirtas has been leading fellow deputies and dozens of supporters on a march to Cizre to end the curfew and draw attention to the plight of its 120,000 residents.