The house search was not the first time this week investigators hit a dead end.
Earlier this week, Gabriel Thomas, 41, and Jeremy Thomas, 18, were arrested and charged with hindering prosecution in the search for Leonard.
Gabriel Thomas allegedly had contact with Leonard and then provided misleading information in the search, according to police. And Jeremy Thomas allegedly fled with Leonard the night of the shooting. Police would not comment on whether the two men are related.
"We also want to emphasize that if you call any of these law enforcement and give deliberate false information to send us in a direction away from capturing this suspect -- we've already taken out two warrants and we'll take out as many as necessary," Murphy said.
Police are looking for the person who reported dropping off Leonard at the house in Montgomery. Authorities said they know who the man is, but would not release any more information about him or his possible involvement in the matter.