German detectives must sit and wait for up to a fortnight as their pursuit of David Haye is held up by red tape following Saturday's brawl in Munich.
Haye yesterday flew off to "warmer climates" in good spirits despite the fact he could face up to five years in a German prison if found guilty of "dangerous assault" during the chaotic clash with Dereck Chisora, who could in theory be jailed for two years himself.
However, both sentences would be extreme scenarios and any action is more likely to be in the form of strong financial penalties.
Munich Police have revealed it could take up to two weeks to get hold of Haye as they look to speak to him in connection with the incident.
He had been keeping a low profile but arrived at Heathrow Airport yesterday afternoon before boarding a flight - reportedly to Las Vegas - and writing on Twitter: "Managed to shake off them bird watchers (photographers) on M25! Jetting off to warmer climates. Its PARTY TIME!"
Haye then posted a picture of himself in a first-class aeroplane seat.
A Munich Police spokesman confirmed this week they would enlist the help of British colleagues at Scotland Yard to track down Haye but it is believed such a bureaucratic process could take up to a fortnight.
Chisora was arrested, questioned and released on Sunday, having grappled with Haye and vowed to "shoot" his rival during their confrontation, which followed his WBC heavyweight title loss to Vitali Klitschko.
Haye, who punched Chisora with a fist clutching a glass bottle and then seemed to hit Chisora's trainer Don Charles with a camera tripod, fled immediately and headed straight for the airport with manager Adam Booth. Booth had suffered a nasty cut to the head, seemingly from accidentally getting in the way of Haye's tripod.
A police spokesman told Press Association Sport: "We're going to ask the British to help us but this is not a quick process. We have to go through the right channels, send letters, et cetera.
"We don't expect something to happen for around two weeks. It is not a serious charge, like murder, it is just a case involving two famous people."
Booth reiterated yesterday that former world champion Haye has no intention of meeting Chisora in the ring.
"David is still retired, he has no plans to fight again," Booth told Radio Five Live.
"He's always said the only people he would come out (of retirement) to fight is one of the Klitschko brothers and what happened on Saturday night doesn't change that one bit."