Sri Lanka, Jan. 4 -- Prime Minister Sir Keir Starmer has told the BBC he regrets welcoming British-Egyptian activist Alaa Abd El Fattah to the UK, following the emergence of old social media posts which included calls to kill Zionists.

Speaking to the BBC's Sunday with Laura Kuenssberg programme, Sir Keir again called the posts "abhorrent" and said he "should have been made aware and I wasn't".

The Conservatives, Reform UK, and some senior Labour MPs have called for Mr Abd El Fattah to be stripped of his British citizenship as a result of the posts.

The prime minister has launched a review into what he called a "failing in the system".

The UK has long lobbied for Mr Abd El Fattah to come to the UK under both Conservative and Labour go...