Members of 15 political movements staged a demonstration outside the British Embassy in Cairo on Thursday, protesting what they say is a problematically slow investigation into the murder of Egyptian doctor Karim Assaad in a London hospital last year.

Assaad was killed in Princess of Wales Hospital in Bridgend, Wales on 24 April 2011, a week before he was to present his research on using a substitute for morphine in anaesthesia.

In anticipation of the demonstration, central security forces closed all entrances to the embassy and surrounded it by barbed wire and armored vehicles.

“It looks like we are still under British occupation,” said Assaad’s mother, Amal Mohamed.

According to the state-run Akhbar Al-Youm newspaper, the “We Are All Assaad” campaign criticized the Foreign Ministry and the Egyptian ambassador to the United Kingdom for what it called the poor, even suspicious management of the case.

Edited translation from Al-Masry Al-Youm