Police found game meat also tied to the horse raising suspicious that the horse could have been used in poaching activities.
The horse was found floating in Xhoodumo river at Thogoyatlou cattle post near Nxaraga village.
Maun Police Station Commander Kenanao Badumetse, said a 65-year-old fisherman saw the horse floating in the river and informed the police.
After a week, police received another call from the same fisherman who informed them that there was another tusk close to where the horse was found.
Although no arrest has been made, Badumetse said the discovery is a sign that poaching is rife in Ngamiland.
“The horse has a brand and we will liaise with the Veterinary Department to find out who the owner is.
We are still investigating because for now we do not know who rode the horse and where he went to.
We are not sure if he also drowned or survived,” Badumetse said.
Both tusks were still fresh and this showed that the poacher was trying to cross the flowing river with the horse when it drowned.