New Delhi, April 9 -- Gunmen attacked two villages in the north-central region of Nigeria, killing at least 20 people, residents said Wednesday.

The attacks occurred in the early hours of Tuesday in Bagna and Erena, located in the Shiroro area of Niger state. Shiroro is about 250 kilometers (155 miles) or a four-hour drive from the capital, Abuja.

"They came on motorbikes and began shooting. It was a surprise attack, because it was in the early hours of the morning," said Jibrin Isah, who lives in Erena.

Residents said that at least 20 people were killed, with more missing. However, local police said that only three people were killed.

"Unfortunately, two vigilante members and a driver from the joint security team lost their lives dur...