The TTC has launched an internal investigation after a photo of a sleeping fare collector made its way around social networking website Twitter on Thursday.

Spokesperson Brad Ross says the organization is concerned about the photo but is encouraging riders and city residents to avoid jumping to conclusions about what it depicts.

“We have to be careful in making assumptions about what has happened,” he said on CP24’s “On The Rocket” on Thursday night. “There are many circumstances that may explain this… or may not.”

He said the TTC expects its fare collectors to be alert on the job as they are expected to monitor the security of the fare area and give directions in addition to collecting money.

The photo first surfaced in the mid-afternoon and became on of the most discussed items among Twitter’s Toronto users.

Also Thursday, the TTC unveiled an initiative to improve its customer service. It has hired a panel of private sector experts to improve the experience for riders.