At least 44 people died after a passenger ferry capsized in a lake in Zimbabwe on Tuesday, police said, roughly tripling an earlier estimate of the death count after more bodies were found.

Investigations suggested the ferry was overloaded when it sank during heavy winds on Lake Kariba, officers said on Wednesday.

The vessel was built to carry 90 passengers, but more than 120 people could have been on board as it crossed the lake that borders Zambia, police said in a statement.

So far 67 people have been rescued and taken to a primary school for medical attention, the force added.