EAST London police fired stun grenades and teargas as they raced a colleague to safety last night in an armoured personnel carrier under a hail of bricks and stones from a 300-strong mob baying for his blood. They were also forced to shut down a satellite police station indefinitely, after enraged Pefferville residents smashed windscreens and slashed tyres of police vehicles parked outside. They threatened to torch the station and kill the officers inside after the fatal shooting in the charge office by a sergeant of local resident Denver Malgas, 21, who had gone to report a gang fight. Malgas, joined by another man and woman, allegedly assaulted the sergeant, removed his gun from around his waist to prevent it being grabbed. A shot went off and Malgas was hit in the chest. He ran outside where he collapsed and died a few metres from the station door in sight of the angry crowd blocking the passage of a government mortuary van.