A Puerto Rico man accused of creating 300 Twitter accounts to harass people online has been arrested in the first case of its kind for the U.S. territory, authorities said Tuesday.

The island's Justice Department said 27-year-old Omar Falcon Torres is suspected of operating under the name "MedeaBot" for two years. He faces charges that include stalking, misappropriation of identity and intimidating witnesses in part by sending people "violent sexual imagery" and using violent language, authorities said.

A judge in September issued a warrant for Falcon, who was arrested late Monday at a relative's house in the central mountain town of Comerio.

Officials said they believe he targeted dozens of people although only eight of them filed formal complaints against him.

It was not clear if Falcon has an attorney. He is being held on $180,000 bond until a Dec. 21 preliminary hearing. He faces 58 charges, of which 12 are felonies, and faces up to 8 years in prison, according to El Nuevo Dia.

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The Justice Department began investigating after people contacted police to complain about Falcon's online behavior, judicial spokeswoman Gingger Correa told The Associated Press.

Authorities declined to provide any other details including a possible motive or whether the victims knew Falcon. Correa said officials are barred from talking about the case because the evidence will be presented Dec. 21 in court before a judge expected to decide whether Falcon will face trial.

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