'Castle' Star Trolls Want My Husband Dead

4/3/2016 12:50 AM PDT

Online Trolls Want 'Castle' Star's Husband Dead

EXCLUSIVE

"Castle" star Stana Katic and her husband are getting harassed so viciously they've had to call in the LAPD.  

Law enforcement sources tell us Katic's husband, Kris, went to police to report an IG user who'd been leaving nasty comments on Stana's social media. We're told some of the comments read, "Kris, I hope you die" and "I wish cancer on you and your family."

Our source says the harassment started in October, but things got really bad in February when the suspect started making nasty comments about extended family members and their dog by name. Stana and Kris are worried because those names aren't listed publicly.

Cops tell us they've determined the suspect is out of country, but haven't made contact with him yet.