@fox4newsdallasfortworth: BODYCAM: An ongoing investigation is underway after an arrested suspect managed to briefly seize control of a police squad car on a Dallas freeway before jumping from the moving vehicle Saturday evening, authorities said. The incident began in the 2300 block of South Marsalis Avenue, where Dallas police officers took the suspect into custody, according to Senior Public Information Officer Corbin Rubinson. While officers were taking the suspect to jail at 6:10 p.m., the individual managed to gain control of the police vehicle while an officer was still inside, police said. The officer successfully regained control of the squad car on the R.L. Thornton Freeway near Beckley Avenue, at which point the suspect jumped out of the vehicle and onto the freeway. Dallas Fire-Rescue personnel responded to the scene and took both the officer and the suspect to a hospital for medical treatment.