Boko Haram targets Nigeria troops in dawn raid on polling day

One soldier was killed and 20 others wounded Saturday in a Boko Haram rocket attack in the north east, just hours before voting began in Nigeria's presidential election, security sources said.

A civilian militia source in Maiduguri, capital of Borno state, told AFP "at least 13" blasts were heard throughout the city at dawn, some two hours before voting opened at 0700 GMT.

Residents also reported hearing the explosions.

"Boko Haram terrorists attempted to enter the city but were intercepted," a security source told AFP.

"They resorted to firing RPGs (rocket-propelled grenades) on the city. Attempts have been made to locate the source of the firing."