The body of a police officer shot during the removal of a pro-Morsi sit-in has arrived in Cairo after he died while receiving treatment in London.

First Lt. Mohamed Mahmoud Abdul-Aziz was shot by an unknown protester while driving an armoured vehicle during the storming a protest camp at Nahda Square in Giza on 14 August.

He did not shoot at the assailant, who was accompanied by his wife and daughter, state news agency MENA reported.

The 22-year-old officer underwent several serious operations in Cairo before being sent to a London hospital where he died on Monday.

On Monday, the British Embassy issued a letter disputing claims it had been slow to facilitate Abdul-Aziz's travel procedures.

The embassy said it had provided him with a visa "in the shortest time possible due to the exceptional circumstances."

"We received his application on 4 September, processed it immediately and issued the visa on 5 September."

"The British Embassy continues to be happy to facilitate other similar exceptional applications and we are working closely with the Ministry of Interior to assemble the essential documentation."

Mohamed Morsi, Egypt's first freely elected president, was ousted by the army on 3 July amid mass protest against his rule, plunging the country into a period of deep political unrest.

Since then, more than 1,000 people have been killed. At least 600 protesters were killed when security forces broke up pro-Morsi protest camps in Cairo and Giza on 14 August. At least 117 members of the security forces have died in the violence.