An Ethiopian asylum-seeker, who was serving a 12-month prison sentence in the UK for sexually assaulting a 14-year-old girl, was mistakenly released on Friday, triggering an urgent police search. This individual had previously been at the center of anti-migrant protests across the country.

Hadush Gerberslasie Kebatu, whose case had sparked widespread demonstrations against migrants during the summer, was inadvertently set free from a prison in Chelmsford, just before his scheduled deportation.

British Prime Minister Keir Starmer expressed his outrage, labeling the accidental release of the 38-year-old sex offender as “totally unacceptable.”

Starmer emphasized that the police are working diligently to locate Kebatu, with the government’s full support. “This man must be apprehended and deported for his crimes,” he asserted.

“This man must be caught and deported for his crimes.”

Details of how Kebatu ended up being released remained sketchy, but Essex Police, northeast of London, said they were alerted just before 1pm to “an error this morning surrounding the release of an individual”.

They said officers were “working to urgently locate and detain him” after he was seen catching a train at Chelmsford.

The Prison Service launched an investigation, and a prison officer has been removed from discharging duties while that takes place.

Aaron Stow, president of the Criminal Justice Workers’ Union, which represents prison officers, said Kebatu’s mistaken release is “a profound failure of duty” and a “betrayal of the victims, the community, and the principles of justice.”

Kebatu was found guilty last month of five offenses, including sexual assault, inciting a girl to engage in sexual activity and harassment.

Kebatu’s arrest and prosecution prompted thousands of people to protest outside the Bell Hotel in Epping, northeast of London, where he was staying along with other newly arrived migrants.

Multiple protests targeting other hotels housing migrants followed in other British cities and towns, with some demonstrations attended by far-right activists and spilling into disorder.

The group Stand up to Racism also rallied in counterprotests.

Kebatu had arrived in England by boat just over a week before the July day when he was adjudged to have approached the 14-year-old in Epping, attempted to kiss her and placed his hand on the girl’s thigh. They said he also sexually assaulted a female member of the public who intervened.

Kebatu’s lawyer said he wanted to be deported after serving his time in prison.

Tensions have long simmered over unauthorised migration — especially the tens of thousands of migrants crossing the English Channel in overloaded boats to reach the UK — as well as the Labour government’s policy of using hotels to house migrants who are awaiting a decision on their asylum status.

Critics say it costs taxpayers millions of pounds, while the hotels become flashpoints in communities and leave migrants feeling targeted by local residents.