Facebook CEO Mark Zuckerberg has taken out a restraining order against an alleged stalker, a 31-year-old man named Pradeep Manukonda, who's apparently been sending Zuckerberg "threatening" messages through (where else?) Facebook.

According to TMZ, which got their hands on the restraining order, Manukonda's been trying to get in touch with Zuckerberg since January, showing up at Facebook offices, and, in once instance, at Zuck's home in Palo Alto. Manukonda also sent a handwritten note (above), along with, sweetly, flowers.

Of course, Manukonda has also been sending Facebook messages—including this one to Randi Zuckerberg, Mark's sister:

"I owe entire life at your service .. please help me , then i am ready to die for you," it reads. Manukonda has been ordered to stay 300 yards away from both Zuckerbergs and Mark's girlfriend Priscilla Chan until a hearing later this month.

[TMZ; image of Zuckerberg via AP]