Any police involved in an auto accident that day?
I haven't heard of any official report about an accident involving a police vehicle.
Tippit was shot dead in the sector monitored by Patrolman Mentzel. Mentzel was the only patrol officer after 12.45 to be taking a break.
He later claimed to be in a restaurant/café on West Jefferson 2 blocks from the Texas Theater.
Shortly after he came back into service at 1.o7, there was a report of a traffic accident at 817 West Davis. However, another officer dealt with it.
Immediately on hearing of Tippit's death, Mentzel was the first officer to be contacted by the Dispatcher. This call was not responded to - one of 3 calls to patrol officers in Oak Cliff that went unanswered.
(This has to be seen in the context of Tippit missing calls once every 15 or 18 months.)
Tippit missed a call at 1.03 and Parker too missed one earlier. Moreover, less than a minute before the 12.45 instruction to Tippit to move into the central Oak Cliff area ostensibly because it was being depleted of resources, Parker said he was on East Jefferson!
The roles of Mentzel, Parker and off-duty Reserve Sergeant Croy (the first officer on the scene of the Tippit murder) raise suspicions.