Los Angeles, California (CNN) -- The domestic violence investigation involving Mel Gibson and his ex-girlfriend should be presented to the district attorney within the next two weeks for a decision on whether to prosecute, a sheriff's spokesman said.
"It seems to be winding down," Los Angeles County Sheriff's spokesman Steve Whitmore said. "We still have a couple things to do. It could change."
Police in Malibu Hills, California, opened the investigation earlier in July into an alleged domestic violence incident between Gibson and Oksana Grigorieva.
Phone calls recorded by Grigorieva are "part of the investigation" into the alleged domestic violence," Whitmore said last month. Several explosive audio recordings, purportedly between Grigorieva and Gibson, were released online in the past month.
Gibson and Grigorieva are involved in a bitter child custody dispute over their 8-month-old daughter.
Grigorieva has accused Gibson of striking her in the face, while he alleges that she attempted to extort him to keep controversial recordings of their arguments a secret.