At least 20 people were killed and 68 injured after a passenger bus and a van armored to transport cash collided head-on in Limpopo, South Africa on Monday evening. Emergency responders found three people dead at the scene of the crash and 16 bodies near a river where the bus had rolled down a slope. One more individual died after being taken to a hospital. The remaining injured received treatment at the crash site, with some being transported to nearby medical facilities. The cause of the crash is unknown, but heavy rain had been falling in the area. Police investigators were still at the scene on Tuesday morning.