Security forces shot dead at least 11 Tamil Tiger rebels in northern Sri Lanka shortly after the guerrillas staged a suicide bombing against police, the defence ministry said Tuesday. Troops in Mannar district attacked three bunkers of the Liberation Tigers of Tamil Eelam (LTTE) on Monday, killing at least 11 and wounding two more, said the ministry, which put its losses at two soldiers. The ministry said another government soldier was wounded in the clashes, which came shortly after a Tiger suicide bomber hit a police complex in neighbouring Vavuniya district and killed 12 police.