ABUJA, Nigeria — The death toll from a shooting at a mosque and attacks on several nearby villages in northwestern Nigeria has risen to 50, a local official said Wednesday.

Gunmen stormed the mosque in Unguwan Mantau town in Katsina state during morning prayers on Tuesday, according to lawmaker Aminu Ibrahim.

“The bandits killed 30 people and burnt 20 others during attacks on several villages,” Ibrahim told the state parliament. Authorities earlier reported at least 13 people killed at the mosque.

There has been no immediate claim of responsibility for the attack.

Such attacks are common in Nigeria’s northwestern and north-central regions, where herders and farmers often clash over limited access to land and water. An attack last month in north-central Nigeria killed 150 people.

The c

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