New York City police say they're looking for video evidence on three cellphones seized from teen boys suspected in the gang rape of an 18-year-old Brooklyn woman.

A police spokesman said Wednesday that investigators obtained search warrants for the phones, but he had no information yet about their content.

The search comes after defense attorneys revealed the existence of a video clip they said shows a partially undressed woman smiling and laughing during her nighttime encounter with five teens in a public park.

Police say the woman was sexually assaulted.

The cellphone evidence could further muddy a case that's already full of conflicting accounts and other complications.

The last of the five to be arrested was scheduled for arraignment Thursday.

The defense lawyers deny the charges.