Jack Tweed has been arrested after a woman claimed she had been sexually assaulted, according to the Metropolitan Police.
The alleged assault took place in Redbridge, in north east London.
A police spokesman said: "A female in her late teens has made an allegation of sexual assault. The alleged incident occurred in the Redbridge area in the early hours of this morning. Two men in their 20s have been arrested in connection with the inquiry."
The widower of reality TV star Jade Goody, Jack Tweed has already spent 12 weeks in jail after he was found guilty of assaulting a taxi driver.
Tweed, whose wife died in March, was found guilty of the attack on Stephen Wilkins. He had denied it.
That was the second time in six months that the 22-year-old has been found guilty of assault. In September he was jailed for hitting a 16-year-old boy with a golf club, which he also denied.