LONDON (AP) — British police are investigating Wednesday whether a British man and woman arrested on suspicion of supporting terrorism offenses in Syria were part of a group that held two veteran war journalists hostage in Syria in July.

The abduction of photographers John Cantlie and Jeroen Oerlemans highlighted concerns that British Muslims might be slipping into Syria to join extremists. Both said after their week-long ordeal that some of their captors spoke with British accents.