Texas Government Code - GOV'T § 411.061. Definition

(1) the area bounded on the north by the inside curb of Martin Luther King, Jr., Boulevard, on the east by the outside curb of Trinity Street, on the south by the outside curb of 10th Street, and on the west by the outside curb of Lavaca Street;

(2) the William P. Clements State Office Building located at 300 West 15th Street;  and

(3) other locations under the jurisdiction of the capitol police district as may be approved by the director.