Nigeria, April 8 -- Amnesty International has expressed grave concern about a rise in deadly attacks across parts of northern Nigeria.

In a statement released on Monday, the human rights group reported that at least 71 people were killed and more than 50 others were kidnapped by armed groups in just one week.

According to the report, 52 people were killed in Plateau State, 13 in Kebbi, and six in Katsina. In addition, over 50 people were abducted in separate attacks in Katsina State.

"The violence is increasing rapidly in rural areas, and hundreds of people are being displaced," Amnesty International said.

The organization warned that the continued attacks are creating a growing humanitarian crisis. Entire communities are being forced...