Jillian and the babysitter were later taken out of police custody, according to KLTA.
In 2005, Jillian married musician Scott Shriner. In 2001, the bassist replaced Mikey Welsh in the rock group Weezer.
The two lives in the same home and have two adopted children together.
According to the news agency, a multi-vehicle hit-and-run caused mayhem in Los Angeles, prompting police to begin a comprehensive manhunt.
