LOS ANGELES (CBSLA.com) — Authorities stepped up security Monday evening after a threat was made to the Universal City Red Line subway station.

FBI Assistant Director in Charge Deirdre Fike said Monday evening that the threat came through an anonymous phone call to a public safety line, and authorities were working to determine the credibility of the threat.

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The caller indicated that something would occur at the station Tuesday, she said.

Law enforcement officials stepped up security at the station and other transit stations across the area in response.

Red Line trains continued running on time amid the heightened security, Stu Mundel reported.

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LA Mayor Eric Garcetti urged people to go about their lives as normal.

He said he is planning to board a train at the station tomorrow morning, and notes that travelers will see an increased law-enforcement presence at transit stations.

LAPD Chief Charlie Beck said the threat was “very specific,” targeting the Universal City station, “but the credibility still needs to be vetted out.”

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