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MEXICO CITY (CBSMiami/AP) — A U.S. border rights activist was found on the outskirts of Mexico City after sending a Facebook live message saying people were trying to kill him and he was left stranded.

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A Mexican federal official said the person found beaten was Hugo Castro. He is a member of the migrant defense group Border Angels.

The federal prosecutors’ office said Castro had suffered several contusions, and had been taken to a hospital for treatment. The office said he was in stable condition.

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Castro was found after an anonymous caller tipped police he was in Tlalnepantla, just north of Mexico City.

He had sent a Facebook live message on April 13th, saying he was stuck on a highway and unidentified people were trying to kill him.

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(© Copyright 2017 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)