a double stabbing in north Manchester.He was said by police to be in a 'critical' condition.A second man, who suffered knife wounds and went to hospital of his own accord later, was said to be in a 'serious condition'.Armed police and emergency services were scrambled to Church Lane in Moston at 2.40pm on Tuesday.Detectives said initial enquiries have found 'a group of individuals had been involved in an altercation'.One witness said they heard a car crash into another car before fighting broke