BSF on Sunday arrested four people, two of whom were identified as Pakistani citizens with links with Lashkar-e-Taiba, sources said on Monday. BSF sources said the four were arrested at Haridaspur in North 24-Parganas on suspicion of subversive activity along the Indo-Bangladesh border and on questioning revealed that apart from the Pakistanis, one was a Kashmiri. The identity of the fourth is yet to be ascertained. "The fourth member of the group is a slippery character. Initially, he spoke in broken Bengali and claimed he was a Kolkata resident. On grilling, he retracted his statement and said he is from Aurangabad in Maharashtra. When we quizzed him about Aurangabad, it was revealed that though he has lived there for some time, he is originally from somewhere else," a BSF official said.