LAHORE - Pakistani Air Force jet fighters on Saturday chased the intruding Indian planes, pushing them back to their territory after they had violated Pakistan's airspace. According to PAF sources, the Indian planes entered the Pakistani airspace over Lahore and Kashmir sectors twice, while the PAF beat them back on both occasions. The PAF planes, which were already on alert, quickly came into action and forced the Indian fighter jets to quit Pakistan airspace. Prime Minister Syed Yousuf Raza Gilani confirmed the violations, maintaining he was informed by the PAF Chief. The sources further said that the Indian planes were fully equipped with warheads. There were conflicting reports as to how deep the enemy planes had intruded into Pakistani territory. As per one source, the IAF planes violated the Pak territory by two nautical miles (about four kilometres), while another said it was by three nautical miles (six kms). PAF spokesman confirmed the violation, saying that the Indian planes invaded four kilometres into the Pakistani territory. Precise time and places of violations were not also disclosed by the source. "One was at about 4 pm in the evening, while the other was during the late hours of the night," confided the source. Meanwhile, state-run TV channel has reported that a loud blast was heard in Arabian Sea between Badin and Jati cities Saturday night. However, further details about the blast were not received. The cause and exact location of the blast was being ascertained. However, the locals were in a state of fear after the blast. The step taken by the IAF has worsened the already tense situation emerged after Mumbai attacks on November 26 in which over 170 people were killed. Diplomats from all over the world are trying to defuse the tensions surfaced between the two neighbouring nuclear powers, but their efforts seem to be of no avail. According to a private TV channel, Federal Information Minister Sherry Rehman also confirmed the airspace violation, saying that the government had contacted the Indian officials in this connection. PML-N Quaid Nawaz Sharif and Punjab Chief Minister Shahbaz Sharif strongly condemned the violation and said Pakistani forces and nation are fully united and ready to combat Indian aggression. AJK Prime Minister Sardar Attiq also condemned the violation in strong words and termed the incident a conspiracy.