A Mexican farmworker died on Friday from injuries sustained during a federal immigration raid the day before in an agricultural region north of Los Angeles, according to the United Farm Workers union.

The farmworker, Jaime Alanís, fell several stories to the ground from a greenhouse on Thursday, when federal agents raided a state-licensed cannabis farm in Ventura County.

“During the chaos, he fell 30 feet or more, and experienced devastating spinal and skull injuries,” Elizabeth Strater, a United Farm Workers vice president, said in an interview.

An official familiar with the circumstances of the farmworker’s death said he was from the Mexican state of Michoacán, had been working at the farm for more than a decade and had been trying to flee from agents when he fell. He was in his late 50s.

Ms. Strater said that after the fall, he was transported to a hospital, where he was on life support for a time, and he died on Friday.

The Ventura County coroner’s office said that it had yet to receive a death report in his name.

Andrew Dowd, a spokesman for the Ventura County Fire Department, said that eight people had been transferred to area hospitals in response to 911 calls on Thursday, and that four other people had been treated at the scene.