This is from an older post of mine, not yet updated to include the testimony we have--but it's a real good start. First, here's the interview from February 5th, LEO to the SD local media, source is below:
Officer: During the course of our investigation, the resident here, his name came up, as someone who had contact with the family. We've talked to him. He is cooperating with us. He's talked to us yesterday, he's talking to us today. We had some things we wanted to check in his house. He allowed us to go into his home and we are doing some things to process the scene and possibly eliminate him as a suspect." Source
Second, there was an article in the San Diego Union-Tribune the same day, where another officer says something quite similar:
"This is a process of elimination," said Dave Cohen, a spokesman for the San Diego Police Department. "We have gotten some information and we wanted to take a little closer look at his vehicle and his residence." Source
And from the motion filed in court by Feldman:
"Detective Alldredge's affadavit was relied on to establish probable cause for search warrants 2783D and 27818 to search Mr. Westerfield's home. 27813 for Mr. Westerfields clothes. In his affadavit, Alldredge misrepresented statements by Brenda Van Dam that were relied on to supply probable cause for the issuance of the search warrants. Because the affadavits were sealed, documents may only disclose the specifics of the misrepresentations in camera."
So, from this, it appears Brenda said something, but that Alldredge might have altered it or exaggerated it. Bottom line, it looks like someone did point the police in a certain direction.