Police in Perth, Australia, are combing through closed-circuit TV footage after reports that a young woman performed oral sex on a man on a commuter train during rush hour Thursday.
A witness, known as Kerry, told Australian media it occurred at around 5:30 p.m. in the middle carriage of the Armadale line.
"I was a few feet down from them and in the corner there were two people, male and female, with the female giving the older male oral sex, in front of everyone," Kerry said, adding the rest of the group was drinking.
The woman said there were children on the train at the time.
Transit guards were in another carriage and didn't do anything about it when passengers approached them, Kerry said.
Officials with the Perth Transport Authority said they're investigating whether the act occurred and whether the transit guards could have behaved better.