Four policemen and three suspected Taliban fighters were killed and an Afghan interpreter wounded in attacks in volatile southern Afghanistan, police and an official said on Sunday. About a dozen suspected insurgents stormed a police check post on a main highway late on Saturday, sparking a fierce gun battle in which three policeman and an attacker were killed, highway police commander Mohammad Nabi Allahyar said. Another policeman and two militants were killed in a clash after a suspected Taliban ambush in neighbouring Uruzgan province the same night, provincial governor Jan Mohammad Khan said.An Afghan interpreter working with private US security firm USPI was meanwhile wounded on Sunday when Taliban attacked his vehicle in southwest Helmand p The attacks occurred two days before the first sitting of the war-ravaged country’s legislature due on Monday (today) after more than three decades of conflict.