I don't think the gun belongs to MB or the perp...I think it probably belongs to an officer who responded to the church who probably drew his weapon while searching the church. According to statute -- 552.108(b)(1) it's an "internal record or notation of a law enforcement agency"...but heck I could be wrong.
Sec. 552.108. EXCEPTION: CERTAIN LAW ENFORCEMENT, CORRECTIONS, AND PROSECUTORIAL INFORMATION. (a) Information held by a law enforcement agency or prosecutor that deals with the detection, investigation, or prosecution of crime is excepted from the requirements of Section 552.021 if:
(1) release of the information would interfere with the detection, investigation, or prosecution of crime;
(2) it is information that deals with the detection, investigation, or prosecution of crime only in relation to an investigation that did not result in conviction or deferred adjudication;
(3) it is information relating to a threat against a peace officer or detention officer collected or disseminated under Section 411.048; or
(4) it is information that:
(A) is prepared by an attorney representing the state in anticipation of or in the course of preparing for criminal litigation; or
(B) reflects the mental impressions or legal reasoning of an attorney representing the state.
(b) An internal record or notation of a law enforcement agency or prosecutor that is maintained for internal use in matters relating to law enforcement or prosecution is excepted from the requirements of Section 552.021 if:
(1) release of the internal record or notation would interfere with law enforcement or prosecution;