German police may call on Scotland Yard in hunt for David Haye Chisora returned to Britain last night after being arrested, questioned and released by detectives following the incident, which occurred immediately after his WBC heavyweight title defeat by Vitali Klitschko on Saturday night. Press Association Sport understands Haye, however, may already be back in the United Kingdom while German detectives also believe it is likely he is back in Britain. Munich Police spokesman Gottfried Schlicht admitted: "We still don't know where David Haye is. I don't know whether British police have been contacted yet because that is the job of the court, not the Munich Police. We have to ask the court in Munich and the court goes to Scotland Yard or wherever in the UK. That is likely to happen but I don't know how long the process will take. My opinion is that it should or will happen as soon as possible but I can't say whether that will take days or weeks. Schlicht admits detectives are at an impasse until Haye is located. "Until we speak to Haye, nothing more can happen," he said. We need both sides. We've heard Dereck Chisora and now we wait to hear David Haye. Haye fled after the brawl and police have been unable to track him down so far as they seek his side of the story. Officers searched his hotel within two hours of the brawl but Haye had already gone to ground. Haye's manager Adam Booth - who sustained a nasty cut which may have been suffered when Haye tried to swing a camera tripod at the head of Chisora's trainer - has declined to answer calls from Press Association Sport. Booth answered a call while still overseas, refusing to comment, but by yesterday morning was ignoring attempts to contact him. Rumours that he and Haye were already back in the United Kingdom by yesterday morning were fuelled by the fact the dialling tone on Booth's phone had reverted to the British style. Even if no long-term police action is taken against those involved, both Haye and Chisora will have cases to answer with the boxing authorities for the brawl. The ugly scenes began when Chisora and Klitschko's manager Bernd Boente, both speaking at the Olympiahalle press conference, goaded Haye as the former WBA champion heckled from the back of the room. Haye, who officially retired in October, wants to fight Klitschko, having lost badly to his brother Wladimir last summer. While he shouted to Boente and the Klitschkos during the conference, Chisora goaded him about his performance against Wladimir, challenged him to a future bout and vowed to "slap" his rival. Haye responded and Chisora left the stage to confront him, pushing a microphone into his temple. Haye seemed to land the first punch, using a fist holding a glass bottle, and the brawl ensued. Haye is seen trading blows with Chisora's trainer Don Charles and then swinging a camera tripod at his head. Chisora is seen brandishing a glass bottle - which is wrestled from his hand - and later, claiming to have been glassed, repeatedly vowed: "I am going to shoot you. Eventually the chaos calmed but the fall-out promises to be substantial. Chisora's promoter Frank Warren condemned the incident and the British Boxing Board of Control have confirmed they are investigating the behaviour of Chisora before, during and after the fight. Chisora, 28, also courted controversy with his pre-fight antics, slapping his 40-year-old opponent at the weigh-in and then spitting water into brother Wladimir's face in the ring. A BBBC statement from general secretary Robert Smith this morning read: "The British Boxing Board of Control are looking at the behaviour of British Boxing Board of Control-licensed Boxer Dereck Chisora prior, during and after his contest for the World Boxing Council heavyweight championship against Vitali Klitschko on Saturday, 18 February 2012 in Munich. The stewards will be considering Mr Chisora under regulation 25 (misconduct) and a further statement will be issued once the stewards have decided on what action will be taken. With regard to Mr David Haye, Mr Haye is not a licensed boxer with the British Boxing Board of Control and therefore no longer under the jurisdiction of the British Boxing Board of Control. Haye's nominally gave up his licence in October but would require it if and when he secured his long-awaited clash with Vitali Klitschko. Asked whether a life ban was a possibility for Chisora, Smith earlier told BBC Radio 5 Live: "Of course it is.