Three members of a religious group have been killed in clashes with security forces in Nigeria's capital, Abuja, the army has confirmed. Four soldiers were also injured.

A spokesperson for the Shia group, the Islamic Movement of Nigeria (IMN), told the BBC members of the group were taking part in a symbolic procession on Monday afternoon when they were attacked by the military.

This latest clash follows violence over the weekend.

In a statement, the military said troops were transporting ammunition and missiles from Abuja to Kaduna on Saturday afternoon, when they were attacked by members of IMN.

The IMN has held a series of protests in Abuja over the past year to demand the release of its leader Ibrahim El-Zakzaky. He has been in government custody since fighting between his supporters and the army broke out in December 2015.