At least 22 people, mostly policemen, have been killed in deadly attacks against police stations in the western Anbar province for the second day in a row. At dawn on Sunday, armed assailants clashed with police and then set off explosions at police stations in the neighbouring towns of Haditha and Haqlaniya, 220km northwest of Baghdad, said Captain Nasr Abd Allah of the K3 police station in Haqlaniya. At least six policemen were killed at the Haqlaniya police station, he said. Also killed was the manager of security police for the western Anbar sector, Shahir al-Ghuraifi. A third police station, the K3 station, also came under attack as assailants clashed with Iraqi forces, he said. Guards at the Haditha Dam were also attacked, he said. Dr Basim Zayan at Haditha Hospital said a total of at least 22 people were killed in the attacks. **Samarra attacks*** On Saturday, armed fighters launched coordinated attacks in Samarra, located 140km east of Haditha, leaving 29 people dead and another 40 wounded. Assailants stormed a police station, triggered at least two car bombs and fired mortars at government installations. One of the car bombs targeting the mayor's office used a stolen Iraqi police vehicle, the US military said. Twenty-nine people including 17 police and 12 Iraqi civilians were killed throughout the city, the US military said. The dead included the local Iraqi National Guard commander, Abd al-Razzaq Shakir al-Garmali, hospital officials said. Forty other people including 17 policemen were injured, the US military said. **Falluja pounded*** US warplanes and artillery pounded parts of Falluja on Sunday, but there was no sign American forces had begun an offensive to storm the stronghold of anti-US forces. Residents said air strikes interspersed with artillery shelling had set off huge explosions in the city from about 3am (0000 GMT) onwards. There was no word on casualties. US marines relentlessly pounded the insurgent enclave with artillery fire from Saturday night through Sunday morning, an AFP correspondent embedded with marines reported. The bombardment of Falluja kept up pressure on Iraqi fighters and what the US military says are "foreign militants" led by Jordanian al-Qaida ally Abu Musab al-Zarqawi, based in the city. Falluja's residents deny such fighters are holed up there. At least 12,000 troops, including four US military brigades and one Iraqi forces brigade - are ringing the city, a marine officer told AFP. They are awaiting a final go-ahead from interim Prime Minister Iyad Allawi. Falluja has a normal population of about 300,000 but many families have fled to escape the expected US assault, part of the US-backed Iraqi interim government's drive to crush anti-US forces before elections scheduled for January. The US military said it had launched seven air strikes on weapons caches in Falluja, 50km west of Baghdad, between dawn and midnight on Saturday. **Baghdad blast*** Also on Sunday a car bomber attacked a US military convoy on the main road to Baghdad airport hitting a Humvee vehicle, witnesses said. There was no immediate word on casualties. A US military spokesman said: "We cannot confirm the report at this stage." US troops sealed off the scene of the attack on Sunday, on the main road leading to the airport in southwestern Baghdad. A car bomber killed an Iraqi civilian and wounded three US soldiers on the airport road on Saturday. **PHOTO CAPTION*** An Iraqi man covers the body of a Turkish truck driver following a roadside bomb attack on a highway near the northern Iraqi city of Mosul, November 6, 2004. (Reuters)