As many as seven of the terrorists may have British connections and some could be from Leeds and Bradford where London's July 7 bombers lived, one source said.
Two Britons were among eight gunmen being held, according to Mumbai's chief minister Vilasrao Deshmukh. At least nine others are reportedly dead.
The eight arrested were captured by commandos after they stormed two hotels and a Jewish centre to free hostages today.
One security official said: 'There is growing concern about British involvement in the attacks.' More + photos...