Actually occurred in Clyde, sort of a suburban area of Abilene. Latest news:
"Law enforcement blog LEO Affairs, citing local news site Big Country Homepage, says Allen may have been murdered in a coordinated attack; according to LEO Affairs, a search warrant of cell tower data contained these details:
This ruling isn’t official, but a direct quote from the documents reads, “Communication occurred between multiple parties to plan and carry out the murder. [The officer filing the warrant] believes cell towers within the 10-mile radius will have captured transaction between the suspects who were involved in this murder.”"
It may have been a hit on the specific officer, but for some reason other than general cop hatred, as was the case in Houston.