LOS ANGELES, June 8 -- Actor and musician Jared Leto is facing allegations of inappropriate behaviour from nine women, according to a report published by online publication Air Mail.

The claims, said to span almost 20 years, include accounts from women who allege the incidents took place when they were teenagers.

The Air Mail investigation includes on-the-record and anonymous sources, and suggests that such allegations have long circulated informally within the entertainment industry.

"It's been an open secret for a long time," a source reportedly said.

Leto, known for his roles in Dallas Buyers Club and Suicide Squad, is also the frontman of the rock band Thirty Seconds to Mars.

He won the Academy Award for Best Supporting Actor in ...