LAGOS, Nigeria (AFP) — Explosions rocked parts of the north-eastern Nigerian city of Maiduguri yesterday as troops engaged suspected Islamic radicals and raided homes, residents said.

The explosions, which began late Friday, occurred in three neighbourhoods notorious for attacks blamed on the Boko Haram sect, and residents fled as troops went door-to-door arresting people suspected of complicity, they said.

"Last night, there were explosions in Gwange area which went on till the late hours and today the explosions continued in Kalari and Budum neighbourhoods," Modu Ari, a Budum resident, told AFP by phone from the city.

"Soldiers moved from house to house arresting people, forcing residents to flee their homes to escape arrest," said Ari, who had left his house with his family yesterday.

Ali Faltaye, a resident of Kalari, said troops battled suspected sect members in the area, sending residents fleeing to avoid being caught up in the fighting or arrested by soldiers.

"Since morning loud explosions have been going on in the area and soldiers have been breaking into homes making arrests," Faltaye said.