(AP) — Authorities say a Douglas County jail inmate who underwent surgery Thursday following a fight with another inmate was the target of a second attack after he was taken back the to jail on Friday.

Jail guards used pepper spray Friday to break up the second fight involving 24-year-old Anthony Floyd. Jail deputy director John Hubbard says the second fight may have been gang-related.

On Thursday, Floyd had his testicles partially detached during a fight with inmate Marcus Escamilla in the jail’s library and underwent surgery.

Hubbard says Floyd and inmate James Briggs, involved in Friday’s fight, have been segregated from the general jail population. Inmates Justin Proctor, involved in Friday’s fight, and Escamilla have been placed on disciplinary lockdown.