Boko Haram Islamic extremists struck the northeast Nigerian city of Maiduguri for the first time in months Monday, December 28, with rocket-propelled grenades and multiple suicide bombers, witnesses said. At least 15 people were killed but the toll was feared many times higher, the Associated Press reports.

Nigerian troops "intercepted and destroyed" 10 suicide bombers, according to PR Nigeria, an agency that disseminates government news.

Maiduguri, the city under attack, is the birthplace of Boko Haram, which emerged as a much more radical entity after Nigerian security forces attacked their compound there, killing 700 people in 2009.

Militants firing indiscriminately from the back of three trucks attacked the outlying village of Dawari, soldiers engaged them, and as people were fleeing, a woman ran into a suburb yelling "Boko Haram, Boko Haram." When people gathered, she detonated herself, according to village head Bulama Isa.

As the chaos reigned and a rocket-propelled grenade exploded, setting alight grass-thatched huts, a second woman blew herself up, according to Isa. The village chief, 10 of his children and others were killed in Duwari, an outlying suburb of Maiduguri, according to residents Ahmed Bala and Umar Ibrahim.

"The troops laid ambush on the terrorists' suspected routes. ...The suicide bombers were intercepted in three different locations approaching the city," PR Nigeria said, quoting the military.