Evidence collected from the scene of an explosion on Thursday in the Moroccan city of Marrakesh confirms it was a bomb attack, the interior ministry said.
"Analysis of the early evidence collected at the site of the blast that occurred on Thursday at a cafe in Marrakesh confirms the theory of an attack," the ministry said in a statement carried by the official MAP news agency.
The blast in the iconic Jamaa el-Fna square is Morocco's deadliest bombing in eight years.
Earlier reports suggested that the blast may have been caused by a gas canister catching fire.
Witnesses reported rescue services pulling casualties from the cafe.
"There was a huge bang, and lots of smoke went up, there was debris raining down from the sky. Hundreds of people were running in panic, some towards the cafe, some away from the square. The whole front of the cafe is blown away," Andy Birnie, of north London, told The Associated Press by telephone. Mr Birnie is honeymooning in Marrakech.
"It was lunchtime so the square was very busy. We had just walked into the square, but were shielded by some stalls. The locals are telling us it was gas bottles exploding."
Morocco's interior ministry said the explosion appeared to be a "criminal act", according to the state news agency MAP.
Portuguese tourist Alexandre Carvalho, a 34-year-old call centre worker from southern Portugal said: "I had just arrived at the square, the area where most cafes are located.
"Suddenly I heard this massive explosion, I had my back turned to it, I turned around to see it the explosion had happened on the veranda of a cafe.
"There were at least 10 injured people, lots of debris, things flying up in the air. I saw people in a panic running towards the area with fire extinguishers, some people being carried away. I believe the injured were mostly tourists, judging by what they were wearing."
"Analysis of the early evidence collected at the site of the blast that occurred on Thursday at a cafe in Marrakesh confirms the theory of an attack," the ministry said in a statement carried by the official MAP news agency.
The blast in the iconic Jamaa el-Fna square is Morocco's deadliest bombing in eight years.
Earlier reports suggested that the blast may have been caused by a gas canister catching fire.
Witnesses reported rescue services pulling casualties from the cafe.
"There was a huge bang, and lots of smoke went up, there was debris raining down from the sky. Hundreds of people were running in panic, some towards the cafe, some away from the square. The whole front of the cafe is blown away," Andy Birnie, of north London, told The Associated Press by telephone. Mr Birnie is honeymooning in Marrakech.
"It was lunchtime so the square was very busy. We had just walked into the square, but were shielded by some stalls. The locals are telling us it was gas bottles exploding."
Morocco's interior ministry said the explosion appeared to be a "criminal act", according to the state news agency MAP.
Portuguese tourist Alexandre Carvalho, a 34-year-old call centre worker from southern Portugal said: "I had just arrived at the square, the area where most cafes are located.
"Suddenly I heard this massive explosion, I had my back turned to it, I turned around to see it the explosion had happened on the veranda of a cafe.
"There were at least 10 injured people, lots of debris, things flying up in the air. I saw people in a panic running towards the area with fire extinguishers, some people being carried away. I believe the injured were mostly tourists, judging by what they were wearing."