La. Stat. tit. 33 § 2335
In the exercise of the police power of the state and in furtherance of the purpose of promoting more effective enforcement of state laws by municipal police officers, any such officer, when certified in accordance with the provisions of R.S. 40:2402 et seq., and acting under written authorization from the officer's appointing authority, shall have jurisdiction to enforce all laws under the various jurisdictions of the state pursuant to a written request, specifying the names of the individuals and time periods involved, from the appointing authority of the jurisdiction to which the officer is to be assigned. Nothing herein shall allow permanent agreements between agencies. Any such officer having jurisdiction to enforce all laws under the various jurisdictions of the state in accordance with the provisions of this Section shall be considered as a borrowed employee.
La. R.S. § 33:2335