I don’t know much about this case...or cases like it..but I do know that “confidential informants” are known to lie to cops for various reasons.
There apparently was no CI =>
“In the legal documents obtained by Channel 2 Investigates, a sergeant stated that he along with his partner were unable to track down any confidential informants involved in a drug buy at the home of 58-year-old Rhogena Nicholas and 59-year-old Dennis Tuttle. Both were killed in the shooting that also resulted in the shooting of four HPD officers.”
https://www.freerepublic.com/focus/f-chat/3728027/posts
If the homeowners have any children, they and their attorney shouldn’t ever have to work again.