Boko Haram Islamists strapped bombs on two 7 and 8 year-old girls.

The Islamists then blew up the children in a market.

#BokoHaram : Two bombs exploded in crowded area near market in #Maiduguri , Borno State, TODAY, 11 Dec. Scores feared dead but no figures yet. pic.twitter.com/pAjoS3RKte

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The AP reported:

Two girl suicide bombers died when they exploded Sunday in a crowded area near a market in Nigeria’s northeastern city of Maiduguri, injuring 17 people, rescue officials said.

Survivor Abubakar Musa said he also saw among the victims the bodies of soldiers, who were guarding a nearby electric power installation.

Officials blamed the Boko Haram Islamic extremist group that has staged numerous attacks in Maiduguri, the birthplace of the insurgency.

One bomber appeared no older than 7 and the second about 8 years old, said Abdulkadir Jabo, a civilian self-defense fighter who stopped them from going into the market. “I asked the older girl where she was going but she could not speak Hausa or Kanuri … and appeared very unsettled, so I turned her back,” he told The Associated Press.

Seconds later, she detonated, followed by the younger girl, Jabo said.