People gather around the bodies of victims of an earthquake in the mountain village of Tafeghaghte, Marrakesh, Morocco. AFP

Moroccans on Sunday mourned the victims of a devastating earthquake that killed more than 2,000 people, as rescue teams raced to find survivors trapped in the rubble of flattened villages.

The strongest-ever quake to hit the country has killed at least 2,012 people and injured over 2,059, many of them critically, according to the latest official figures.

Friday's 6.8-magnitude quake struck 72 kilometres (45 miles) southwest of the tourist hub of Marrakesh, wiping out entire villages in rural areas.

"I've lost everything", said Lahcen, a resident of the mountain village of Moulay Brahim, whose wife and four children were killed.

Rescue workers recovered the bodies of Lahcen's three daughters from the rubble of what was once their home, but have not yet found the bodies of his wife and son.

"I can't do anything about it now, I just want to get away from the world and mourn."

Troops and emergency services have scrambled to reach remote mountain villages where victims are still feared trapped.

Moroccan Royal Armed Forces evacuate a body from a house destroyed in an earthquake in Tafeghaghte. AFP

Al-Haouz province, where the epicentre of the earthquake was located, suffered the most deaths with 1,293, followed by the province of Taroudant with 452.

First funerals

Bouchra, another resident of remote Moulay Brahim village, dried her tears with her scarf as she watched men digging graves to bury the victims.

"My cousin's grandchildren are dead", she said in a knotted voice.

"I saw the devastation of the earthquake live, and I'm still shaking. It's like a ball of fire that has swallowed up everything in its path," she said.

"Everyone here has lost family, whether in our village or elsewhere in the region", she added.

Authorities declared three days of national mourning, while several countries, including Israel, France, Spain, Italy and the United States, have offered aid.

Damage caused by an earthquake can be seen in Moulay Brahim village in Morocco on Saturday. AP

Neighbouring Algeria, which has had rocky relations with Morocco, opened its airspace, which had been closed for two years, to flights carrying humanitarian aid and the injured.

'Years of aid'

The Red Cross warned that it could take years to repair the damage.

"It won't be a matter of a week or two... We are counting on a response that will take months, if not years", Hossam Elsharkawi, the organisation's Middle East and North Africa director, said in a statement.

The village of Tafeghaghte, 60 kilometres southwest of Marrakesh, was almost entirely destroyed by the quake, the epicentre of which was only about 50 kilometres away, an AFP team reported, with very few buildings still standing.

"Three of my grandchildren and their mother are dead," said 72-year-old Omar Benhanna. "They're still under the debris. It wasn't so long ago that we were playing together."

A man rescues a donkey trapped under rubble after an earthquake in the mountain village of Tafeghaghte. AFP

Residents buried around 70 victims in the nearby cemetary on Saturday, as the funeral rites were punctuated by cries and screams.

In the evening, television channels broadcast aerial images showing entire villages of clay houses in the Al-Haouz region completely destroyed.

"The public authorities are still mobilised to speed up rescue operations and evacuate the injured", the interior ministry said Saturday evening.

The tremor was also felt in the coastal cities of Rabat, Casablanca, Agadir and Essaouira, where many panicked residents took to the streets in the middle of the night, fearing that their homes would collapse.

This earthquake is the deadliest in Morocco since the 1960 quake that destroyed Agadir, in which nearly 15,000 people, a third of the city's population, died.

Agence France-Presse