London - Self-confessed former Nazi concentration camp officer and suspected war criminal, Alexander Schweidler, died in hospital yesterday, police said. Schweidler (78), died at Milton Keynes General Hospital, some 80 km north-west of London, at 4.30 a.m. after his wife called the emergency services when he collapsed with chest pains. "We are arranging for a post-mortem later on today or tomorrow, but his death is not being treated as suspicious," said a police spokesman.