Track Palin, 26, was arrested in Wasilla, Alaska, late Monday and charged with three misdemeanors, including assault, interference with the reporting of a domestic violence crime and weapons possession while intoxicated, according to Alaska court records.
The Wasilla Police Department alleged in a statement that Palin "had committed a domestic violence assault on a female" Monday night.
According to the criminal complaint, Palin allegedly punched and kicked his girlfriend before she says she thought he might shoot himself.
Investigators said that Palin appeared intoxicated and allegedly threw her phone, possibly breaking it, the complaint said.
His bail was set at $1,500. It is unclear whether he has been released on bail, or entered a plea.
U.S. Sen. John McCain (R-Arizona) selected Sarah Palin as his vice presidential running mate during his 2008 run for the White House.
No attorney was listed in court records and a Palin family lawyer did not immediately respond to a request for comment.