A series of car bombs have killed at least 83 people and injured more than 100 in the Egyptian resort of Sharm al-Sheikh.
The blast badly damaged nearby vehicles and buildings
The resort is popular with British holidaymakers and the Foreign Office says Britons are among the casualties.
British eyewitnesses have described the carnage and confusion of the immediate aftermath of the attacks.
FABIO BASONE, IN NAAMA BAY HARD ROCK CAFE
There was shrapnel everywhere. The front of the hotel had been completely blown away, a couple of bodies were lying down on the front of the road - I've no idea if they were alive or if they were severely injured.
But the scene there was just absolutely devastating. People were just trying to run in any direction they could, to get out of the situation, but no-one quite sure where to go.
We were met by an onslaught of people running up the road. Then we were met by screaming people running up the road the other way.
I thought I might be safer out of London but it just goes to show anywhere can be a target.
SAMANTHA HARDCASTLE, NAAMA BAY HOTEL
There were two massive explosions that we felt - three or four minutes apart. The first one went off and it shook the hotel we were in, and it was evident from the minute we heard the bang that it was a bomb - it wasn't just a car backfiring.
Then as we went into the hotel to grab our children, another explosion went off. There's obviously lots of smoke in the sky, and that seems to have settled down now. It was in Old Sharm, which is a few miles from where we are. But the shockwaves that came through were just horrendous.
There's just an eerie sense of calm at the moment. I've never been so scared in the whole of my life.
Pc CHARLIE IVES, WHO LEFT LONDON DAYS AFTER JULY 7 BLASTS
My wife and I and two friends were in a street cafe about 50 metres from where the explosions happened. Two explosions within the space of four minutes.
It was getting difficult to see so we tried to get to a beach nearby to calm down. It was mass hysteria really.
But a lot of people were gathering at a car park next to the beach and I was mindful that the attackers might have a planted a car bomb there.
I told people to go back to the safety of their hotel rooms. You just hope that was the best thing to do.
I've seen lots of (bad) things, as most Met Police officers really have. But to be 50 metres away from two huge explosions, words really do fail me.
RICHARD BONNEVILLE, WORKING IN LOCAL HOTEL
It was something like ten past one and so I was sleeping. I thought we had an earthquake - because our hotel is maybe about 100 metres from the bomb in the Old Sharm. Then after about 15 minutes I learned that it was a bomb.
I hear that one hotel in Naama Bay has been completely destroyed. This is an hotel of 175 rooms, so I guess there are a lot of people dead - a lot.