Associated Press

In his performances as Vincent Crabbe in the “Harry Potter” movies Jamie Waylett is known for his physical menace and mischief making, but these real-life qualities have seen the actor sentenced to two years in jail for his involvement in the 2011 London riots, BBC News reported.

Mr. Waylett, 22, who played the all-around Hogwarts bully Crabbe in six “Harry Potter” films, was found guilty of violent disorder during the July riots by a London court on Tuesday, but cleared of intending to destroy or damage property, after video footage showed him holding a gas bomb.

According to the BBC, closed-circuit security camera images depicted Mr. Waylett drinking from a bottle of Champagne that he had been given by another rioter who had looted it from a supermarket and holding a gas bottle with a wick made from a rag.

Simon Carr, the judge in Mr. Waylett’s case, was quoted by the BBC as saying that he accepted a jury’s verdict that the actor did not intend to throw the homemade bomb, “but merely being in possession of it would have been terrifying to anyone who saw you,” the judge said.

Emily Dummatt, a lawyer for Mr. Waylett, said that her client had become a “withered actor by the age of 22,” adding: “Although he had the good fortune to be in the Harry Potter films, it turned out to be not so good fortune.”

Mr. Waylett, who has a previous conviction for cannabis possession, will be eligible for release after one year in jail.