The "Juno" actress reached out the Los Angeles Police Department after receiving multiple death threats through Twitter in June, TMZ reported.
One message read, "I'm going to murder Ellen Page. She's dead." Another threatened to kill her in public for dating "True Blood" actor Alexander Skarsgard.
"Be it in a club, at a game, in a restaurant, or when you're signing autographs," the message said.
The messages have since been deleted from Twitter, TMZ reported.
The Los Angeles Police Department said the messages coincided with a phone call to organizers of the LA Film Festival where Page's new movie "To Rome with Love" premiered June 14. Police said the caller promised to attend the festival and "kill Page."
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