On Friday, Aug. 7, at approximately 6:50 a.m., the Dallas Police Department received a 911 call regarding a family violence disturbance at an apartment complex in the 8500 block of Park Lane.
The caller reported that 37-year-old Isidoro Melo-Munoz was armed with a knife and assaulting a woman with whom he had been in a relationship.
Dallas police Sgt. John Arnold was the first officer to arrive at the location. According to the Dallas Police Department Beat website, Arnold entered the apartment complex and, as he approached, observed Melo-Munoz run toward the victim and begin assaulting her…