West Yorkshire Police have apologised for incorrectly reporting that six men arrested on immigration charges had been held under the Terrorism Act.
The arrests are not linked to the London bombings, police say
Police stressed the arrests, at an address in the Beeston area of Leeds on Sunday, were not linked to the London bombings of 7 July.
The premises had been cordoned off as a precautionary measure, police said.
"At this stage, these arrests are not being linked to the incidents in London," a police spokeswoman said.
Mohammad Sidique Khan, 30, the bomber of the Edgware Road Tube train on 7 July, came from Beeston.