MAIDUGURI, Nigeria — Suicide bombers attacked a camp for internally displaced people and a nearby market in a northeastern Nigeria village on Tuesday, killing at least 20 people and wounding dozens more, a local official said.

The official, Lawan Kalli — who is the chief of the village, Mandarari — said that at least three suicide bombers had entered Mandarari’s market around 5 p.m. posing as buyers. One or two of the bombers went to a nearby camp for people displaced by Nigeria’s conflict with Boko Haram, and at least one stayed at the market, Mr. Kalli said. All the bombers then detonated their explosives almost simultaneously, he said.

“Our village is right at the entrance into Konduga town,” Mr. Kalli said. “That is where both the camp and the makeshift market are situated, which made us an instant target point of the insurgents.”

At least 80 people were wounded and were taken to the hospital in Maiduguri, a town about 18 miles away, he said.