SACRAMENTO (CBS13) – A California organization is demanding Sacramento Mayor Kevin Johnson resign over allegations of sexual assault.

The Courage Campaign, a group tied to teachers unions, recently released a video showing news reports about sexual assault accusations against Johnson. The videos stem from a case in 1996 – while Johnson was playing for the Phoenix Suns – when a 15-year-old girl accused him of molestation.

No new allegations were revealed in the video and Johnson was never charged in the case.

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Thursday night, the group calling for Johnson’s resignation spoke to us by phone.

“We are responding to a long history – 20 years of allegations of repeated sexual abuse and harassment. Repeatedly, these allegations have continued to come up,” said Laura Levitt, a representative of the organization said.

Courage Campaign organizers say they’ve gathered 9,000 signatures nationwide calling for Johnson’s immediate resignation.

It’s not clear how many of them are from Sacramento.

Johnson announced last month he will not seek a third term as mayor.

The mayor’s office released the following statement in response to the Courage Campaign’s video:

“The mayor is focused on creating jobs and moving the city forward. Piling on by an extreme, Santa Monica-based group desperately trying to build its email list with a low-budget video based on old allegations whose month-long campaign against the mayor hasn’t gained any traction will not change that.”