Sri Lanka's Air Force bombed Tamil Tiger territory in the island's restive east yesterday, officials said, just hours after UN High Commissioner for Refugees Antonio Guterres visited the area. The air attack, a violation of a shaky ceasefire according to Nordic monitors, came as a Norwegian envoy considered how to resuscitate peace monitoring efforts in the South Asian country, officials said.The attack was launched in the rebel-controlled Verugal region of Trincomalee district, 215km northeast of capital Colombo, air force spokesman Group Captain Ajantha Silva said. The military claimed they needed to clear the region before moving engineers in to repair a water tank as Tamil rebels had, according to the government, refused to allow them to do so. Air force jets struck three times, wounding two civilians and destroying two houses, Elilan, a top Tamil Tiger official in Trincomalee, was quoted as saying in the pro-rebel TamilNet website. Guerillas suffered no casualties. A government statement said the "limited operation" was conducted on "humanitarian grounds" to neutralise disruptive forces that are preventing free flow of water to over 15,000 families.