A blast rocked a Hezbollah site in southern Lebanon on Tuesday, reported AFP quoting residents. A military source close to the movement said was an accident.

An AFP photographer said members of the group had cordoned off the area.

According to the report, ambulances had carried away several wounded, while the National News Agency reported limited material damage.

A military source said preliminary information showed the blast happened at a “Hezbollah centre containing munitions”.

Video shared on social media showed a huge plume of dark grey smoke rising from the site of the explosion.

The Shiite movement did not immediately comment on the blast.

Hezbollah, backed by Iran, is the only Lebanese non-state armed group not to have disarmed after the 1975-1990 civil war.

It has fought several wars with neighbouring Israel, Iran’s arch-enemy.

There was no immediate statement from the Jewish state.

The exact cause of that explosion is still unclear.

Last month, Lebanon’s capital Beirut was rocked by explosions that killed over 100 people and wounded thousands. The blasts damaged the city and rendered thousands of people homeless.