An Improvised Explosive Device, believed to be planted by suspected members of the Boko Haram sect, on Sunday exploded at a popular market, Gamboru Market in Maiduguri, living four persons critically injured, a member of the youth vigilance group in the town, Abba Modu, told our correspondent on the telephone.

In the last 48 hours, the Borno State capital has come under the attack of the terrorists on no fewer than three occasions.

On Saturday morning, the insurgents were repelled by the military when an attempt was made to invade the town. It was gathered that 16 persons were killed in that attack.

On Saturday afternoon, a mosque located at the main market in the town, Monday Market, was attacked by a suicide bomber, during which 26 persons were reportedly killed and 28 others injured.

The attack on Gamboru market, according to  Modu, happened at about 1.30pm.

This he said caused pandemonium in part of the town as people hurriedly locked up their shops and fled for safety while the streets were also deserted.

Gamboru market is one of the markets in the city that has witnessed series of deadly attacks by the insurgents  in recent past.