Eleven terrorists were arrested in Lahore on Saturday following a combing operation by the Pakistan Army, the media reported.The Inter-Services Public Relations said the operation was launched following an intelligence report about the presence of terrorists in the suburbs of the city, Dawn said. The operation continued for more than three hours and led to the arrest of 11 members of a sleeper cell of a terrorist organisation, it said. A huge cache of arms and ammunition was also seized.Two of the arrested terrorists were said to belong to Jamaatul Ahrar, a splinter group of the banned Tehreek-i-Taliban Pakistan (TTP).Earlier, the Punjab home department had warned that the TTP's Fazlullah group had sent two suicide attackers to strike at the Wagah border with India near Lahore or the Ganda Singh border in Kasur.