A total of 15 people were killed and 11 others injured in recent gun attacks in north Nigeria, a local official said Friday.

Iran PressAfrica: The deadly attacks were launched by unidentified gunmen to four villages in the state of Kaduna, said Samuel Aruwan, the state's commissioner for internal security and home affairs, in a statement.

The attacks happened on Thursday when the gunmen invaded the villages to grab money but met resistence from villagers, The Nation, a local daily, reported Friday.

"From there, the thing started," a source was quoted as saying.

According to Xinhua, armed attacks have been a primary security threat in parts of Nigeria, resulting in deaths and kidnappings.

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