How would Ron be involved? Wasn't he proven to be at work that evening? And weren't there witnesses that HC was alive and well after he went to work?
Well, it depends on what you choose to believe.
LE said Ron was at work and they have video.
Or...LE is lying to protect the investigation.
LE is lying to protect Ron.
LE didn't really check out his work.
Ron could have slipped away from work, killed Haleigh, and then snuck back into work.
LE hasn't released to the public when Ron was at work, so it's possible they are referring to a time that doesn't preclude him from not being at work when something happened to Haleigh.
LE has no timetable of when something happened to Haleigh, so even if they can show Ron at work when Ron says he was at work, it's irrelevant, which leads to...
Haleigh was at school, or the records were falsified.
(There are witnesses who say Haleigh got off the bus that day, but because there are conflicting stories on who picked Haleigh up from the bus stop, this is also not necessarily accepted as fact)
Haleigh could have been dying at this time from a closed head injury inflicted by Ron at an earlier time.
Ron could have given Haleigh drugs before he went to work.
Ron could have told someone to give Haleigh drugs after he went to work.
(This is just off the top of my head.)
Part two, witnesses who saw Haleigh after Ron went to work (if Ron was actually at work.)
A/C guy. Hasn't come forward to the public to identify himself and declare he saw Haleigh, so might not even exist. Might be covering for Ron for numerous reasons, including probably a relative of Ron. LE hasn't come out to public on what A/C guy said, if there even is an A/C guy, and even if they did, see above as to why this would also not be reliable.
Annette Sykes, ggma of Haleigh. Claims she saw Haleigh about 8pm, over there delivering childrens clean laundry. Might be covering for Ron. Might be covering for Misty.
Tommy Croslin and his children. Claims he was there and his children were playing with Ron's children. Tommy could be...covering for Ron, covering for Misty, covering for himself, on drugs and not know where he was.
LE sent out flyers at one point requesting information on Haleigh from 8pm on. See above for reasons this is also not to be considered reliable.
Hope this helps.