Four suspected terrorists of Khalistani terror outfit Babbar Khalsa were arrested from Punjab's Ludhiana district, police said on Monday.They were nabbed following the interrogation of seven members of the Babbar Khalsa who were arrested on Saturday after the police busted a terror module with direct links to the Khalistani terror outfit.Three pistols and some ammunition was seized from the men arrested earlier.Ludhiana Police Commissioner R.N. Dhoke told the media on Saturday that the group planned to target those opposed to or writing against Khalistani ideology and radical Sikh organisations. Those arrested were allegedly linked to and were funded by Surinder Singh Babbar, who is said to be based in London.Dhoke claimed that Babbar was providing money and weapons to the members of the group.