A zookeeper at a Nigerian university has been killed by one of the lions he had been looking after for close to a decade.

Olabode Olawuyi, who was in charge of the zoo at Obafemi Awolowo University (OAU), was attacked as he was feeding the lions, the university said in a statement.

His colleagues were unable to save him as one of the lions had already fatally wounded him, the university added.

The lion has since been put down.