On the date of the event, police attempted to enter the restaurant, but were blocked by management. State and local authorities then occupied positions outside the restaurant, including on the rooftop of a neighboring restaurant, Don Carlos.
I've read that claim (it appears in the Rodriguez civil suit against Twin Peaks), and find it hard to believe.
On or about May 17, 2015, the date of the event, local police attempted to enter the Waco restaurant to ensure the safety of patrons, but management asked them to leave.
A Texas DPS report written by Christopher Frost claims that the police had planned to be in the restaurant, undercover, but decided not to.
Once information was confirmed that only the patio was rented and the main portion of the restaurant would be open to the public, a decision was made to have Special Agents working in undercover capacity to be inside the restaurant. These Special Agents would be inside the restaurant to conduct surveillance and gather intelligence from inside the restaurant. A CID Operational Plan was completed and will be maintained at the Waco DPS CID Office. ...On 05-17-15 at about 10:30 AM, Special Agent Frost drove by Twin Peaks parking lot and observed what appeared to be employee's only at the restaurant. Special Agent Frost proceeded to the DPS CID briefing location which was the Flying J Truck Stop parking lot located at 2409 South New Road in Waco. ...
During the briefing, surveillance observed a large group of Cossack members at Twin Peaks in and around the patio area. A decision was made during the briefing by Lieutenant Schwartz not to send undercover Special Agents into the restaurant. ...
That report describes attempts to influence Twin Peaks and interaction with both the franchisor and the franchisee, but does not claim what Rodriguez does, that "local police attempted to enter the Waco restaurant to ensure the safety of patrons, but management asked them to leave."