Vanessa Hudgens is reportedly "furious" after fresh images have emerged of a girl, said to be the 22-year old, posing fully naked.
The saucy snaps are thought to be from the same batch of images that emerged online in 2007, showing Hudgens completely starkers and pictured in a series of provocative poses.
According to TMZ, the High School Musical star has recruited the help of the police in a bid to find out who is behind the unauthorised release of the raunchy pics.
The Sucker Punch actress' lawyer, Christopher Wong, stated to the website: "Vanessa is deeply upset and angered that these old photos, which were taken years ago, continue to resurface"
"It is particularly disturbing that whoever got a hold of these private photos seem to be intent on illegally leaking them out over a long period of time."
He added: "We are actively working with law enforcement to determine who is responsible and to hold them accountable for their actions."
The latest leak is the third time Vanessa has been at the centre of a explicit picture scandal, as following those released in 2007, a second batch of images leaked last year.
The new images also include snaps of Vanessa allegedly kissing Zoey 101 star, Alexa Nikolas.
Watch MTV News on the hour every hour on MTV - Sky Channel 126 and Virgin Channel 134