The judge or his clerk has power to issue subpoenas which may be served within the same territorial limits as subpoenas issued in felony prosecutions or to summon witnesses before grand juries in this state.
Tex. Code Crim. Proc. art. 52.03
SUBPOENAS
Acts 1965, 59th Leg., vol. 2, p. 317, ch. 722
Official source: Texas Constitution and Statutes. Reproduced from public-domain Texas statutes; confirm against the official source for the current text. Not legal advice.