Sheikh Raed Salah, who heads the northern branch of the Islamic Movement, returned to Israel on Monday evening, about six months after he was arrested in London following an unauthorized entry into the UK.

Salah was arrested in the London hotel at which he was staying last June. Local immigration authorities claimed that Salah had entered Britain illegally despite having previously been declared persona non grata.

Despite Salah being banned from the country, airport police allowed him to enter. Labor Members of Parliament had invited him to speak at the legislature despite the ban, which did not prevent him from passing through immigration inspection at Heathrow Airport.  He was reportedly arrested only after British newspapers published his appearance.

The British Home Office subsequently agreed to release Salah. A British immigration board later ruled that Salah is “undesirable” and can be deported from the United Kingdom.

Salah was previously arrested and jailed several times in Israel for incitement and assaulting police officers.

After he landed in Israel on Monday, Salah was taken by the police at the airport for a short interrogation, after which he was released.