By REUTERS
ABUJA - An explosion shook a shopping mall in an upmarket district of the Nigerian capital on Tuesday, the emergency services said, adding that there was no immediate sign of casualties."The officers of Search and Rescue and other response agencies are now at the scene and have cordoned off the area," National Emergency Management Agency spokesman Yushua Shuaib said in a statement."So far no human casualty," he added, warning "citizens to be wary of going to the scene of (the) explosion" in the Wuse II district of Abuja, which has been periodically targeted by the Islamist sect Boko Haram.
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