Federal Speaker Bronwyn Bishop and the President of the Senate Stephen Parry have ordered security be increased in the ministerial wing of Parliament House, restricting who can enter the area.

They have also put a ban on unaccompanied passes, saying the changes are "effective immediately".

The move comes as Australian Federal Police officers replaced unarmed public servants who provided internal security on Friday after Prime Minister Tony Abbott said Parliament House had been identified as a potential terror target through "chatter" intercepted by security agencies.

The Department of Parliamentary Services issued a memo from the presiding officers on Sunday night, saying the new arrangements were a continuation of these changes after the national terrorism alert level was raised to high by Mr Abbott on September 12 after a warning from ASIO chief David Irvine.

