Two San Bernardino County men have been arrested in connection with a months-long stalking and intimidation campaign that targeted a family in Yorba Linda, federal authorities announced.

Xiang Li, also known as “Lilinbo,” 42, of Chino Hills, and Bowen Zhou, also known as “Roger Zhou,” 33, of Upland, were taken into custody last week after a federal criminal complaint was filed June 17 in U.S. District Court for the Central District of California, the FBI said.

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Beginning in March 2024, a woman identified in court documents as “Victim 1” and her family member, “Victim 2,” began receiving threatening phone calls and text messages demanding $150,000 and warning they were not safe, prosecutors said. On March 15, a knife and threatening letter were left on their doorstep, according to court records.

One caller reportedly said, “You should know I know where your family lives, and we have a lot of gangsters in the L.A. area.”

The threats escalated on April 4, when six gunshots were fired at the victims’ home while one of them was inside, the complaint states.

FBI agents executed search warrants on June 3, 2025. At Li’s home, investigators recovered ammunition matching the caliber used in the shooting, a phone used to send threatening texts, and another device that had communicated with Zhou during the stalking incidents. At Zhou’s residence, agents seized a firearm consistent with the suspected weapon and a phone used to make threatening calls and contact Li, records show.

The FBI did not disclose a possible motive for the alleged stalking and threats; nor have investigators indicated whether there is any known relationship between the suspects and the victims.

Li and Zhou made initial appearances before a federal magistrate judge and were ordered held in custody. If convicted, each faces up to five years in federal prison.