Tex. R. Civ. P. 34
As amended through February 20, 2024
Whenever a sheriff, constable, or a deputy or either has been sued for damages for any act done in his official character, and has taken an indemnifying bond for the acts upon which the suit is based, he may make the principal and surety on such bond parties defendant in such suit, and the cause may be continued to obtain service on such parties.
Tex. R. Civ. P. 34