A REFUGEE wielding a knife has gone on the rampage in a migrant centre in Germany and taken his pregnant girlfriend hostage.The armed and dangerous migrant took hostages and barrackaded himself into the centre in Hammerbrook, Hamburg. A spokesperson for the migrant centre said he had trapped at least one woman inside with him and that was believed to be his pregnant partner. Armed officers stormed the building with police dogs and what appeared to be heavy duty weapons. German police said they believed the incident was taking place due to "a dispute over accommodation" and has now been resolved.The man's pregnant girlfriend was seen leaving the terrifying ordeal, escorted by police. The attacker was whelled out of the migrant centre on a stretcher with injuries he is believed to have caused himself.