ABUJA, April 22 (Xinhua) -- Four worshippers have been confirmed killed following a suicide attack on a mosque in Nigeria's northeastern town of Bama early Sunday, a local official and the police said.

At least eight others were wounded after two suicide bombers, a male and female, detonated their improvised explosive devices inside the mosque during a morning prayer in the town located in the northern state of Borno, according to the officials.

Buba-Shehu Gulumba, head of the Bama local government area, said the suicide bombers hit the mosque as locals gathered for prayer at 5 a.m. local time.

Gulumba told Xinhua three persons died on the spot and one other died while receiving treatment at a local health facility.

In a statement, local police said it cordoned off the area and had beefed up security around the town.

Bama, located about 67 km southeast of Maiduguri, the capital of Borno, has witnessed many attacks by Boko Haram, a Jihadist militant organization based in northeastern Nigeria.

In late 2014, the town was taken over by the terror group but liberated early 2015 by troops.

The United Nations believes the terror group has killed more than 20,000 people since 2009.