The daughter of Uganda's Transport Minister Gen Katumba Wamala and his driver have died from injuries sustained after the shooting.

The two were in the vehicle with the minister when it was sprayed with bullets from the sides and front by gunmen riding in motorcycles.

Army Spokesman Brig Gen Flavia Byekeaso says security forces have taken interest in a number of phone calls that seem to be related to planning the attempted assassination of the transport minister.

Gen Wamala's injuries from the shooting are said to be not not life threatening.

In videos shared on social media, the former army chief seems to be in agony.

The army has deployed heavily at the hospital in central Kampala where he has been admitted.

Army chief Gen David Muhoozi has visited the crime scene.