The deadly blast occurred as thousands of ethnic Armenians fled the breakaway enclave after their fighters were defeated by Azerbaijan in a lightning military operation.
No group has claimed responsibility for the blast, which comes amid a surge in attacks claimed by militant groups in Pakistan.
Some residents were frustrated that the country's fractured authorities were not acting faster to help.
Rescuers from Spain, Britain and Qatar were helping Morocco's search teams, while Italy, Belgium, France and Germany said their offers of assistance had yet to be approved.
Video obtained by Reuters showed houses in Mucum submerged by rising water, while streets and rivers were also flooded.
An American oncologist delves into over 5,000 near-death encounters, seeking proof of life after death.
Firefighters and emergency vehicles were at the scene, while bodies lay covered in emergency blankets on a street near the site of the early morning blaze.
In the Ituri province, some 3 million people are in desperate need of aid, according to a UN humanitarian agency.
In a 73-page report released on Monday, Human Rights Watch accused Saudi guards posted along the Yemen border of "widespread and systematic" attacks on migrants.
The wind-whipped firestorm that raged through Lahaina in west Maui killed at least 111 people in a death toll that is still mounting.
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