James Rainford has struck again.
The stalker who was arrested in front of Paris Hilton's house last October - following his trespassing onto her property and an altercation with the star's private security team - actually attacked Paris and boyfriend Cy Waits outside an L.A. courthouse today.
The incident took place when the couple was walking in to testify against a different man accused of sneaking on to Hilton's property and pulling out a knife.
Sources on the scene say Rainford punched Waits in the back of the head and grabbed him by the neck. Security intervened and Rainford is now in police custody.
Rainford later told E! News that he just wanted an autograph from Hilton... and also wanted permission from her father to propose.
"So creepy seeing that guy in court today," Hilton Tweeted. "It sent shivers down my spine."