On Monday, the fire department responded to the home in the actress' hometown of Thousand Oaks, Calif., and found Bynes standing in the driveway next to the fire. The sheriff's department arrived on scene and questioned the actress about her actions and intentions. Based on her answers, they decided she needed to be hospitalized on a 5150 hold, which allows for involuntary hospitalization for mental evaluation for up to 72 hours.
According to the site, prosecutors will not press charges, which could have included trespassing, arson or other criminal offenses. However, Bynes still faces other charges from unrelated events in Los Angeles and New York City.
The news is the latest in Bynes' erratic behavior, which is documented here.