Snorkeling Death Investigation Shifts Focus to Husband

Dan Abrams discusses recent developments in the disappearance of Rebecca Weiss.
3:00 | 08/17/12

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Transcript for Snorkeling Death Investigation Shifts Focus to Husband
We're going to get to the wealthy businesswoman who went for a morning dive in california and vanished. Police are looking for this woman, rebecca weiss, an experienced diver, whose husband reported her missing over the weekend. And now, police are shifting their focus. Here's abc's david wright. Reporter: After four days of searching the waters off this five-star california resort, authorities seem no closer to solving the mystery. What happened to 50-year-old rebecca weiss. It's my daughter. Reporter: Her husband reported her missing saturday evening. Saying she had gone snorkeling alone that morning and never came home. She was an expert diver. She was one with the water. She was constantly on the water. Reporter: Investigators say it was alan weiss who discovered his wife's car and dive bag at one of her favorite spots. He led investigators there. This doesn't add up? This does not add up to me. Reporter: Rebecca's brother is an l.A. Sheriff's deputy. He and other family members have been posting flyers, searching for answers. Did anybody see her going into the water? We have not found anyone. Reporter: This is now a missing person case, being investigated by detectives. Her dive bag at the end of this foot bridge, minus her cell phone and car keys. Bob causey says it doesn't make sense that his sister would leave her bags so far from the water. Why is that suspicious to you? If you're on the water snorkeling, you're not going to see that. Reporter: The husband, alan weiss, has declined all requests for interviews. But he has spoken to investigators, who insist he is not a person of interest in the case. He's been cooperative with investigators. Reporter: But rebecca's mother tol ktla tv, the husband had been having an affair. She found it on the computer. He has a girlfriend. Reporter: Other family members decline to speculate. They just want answers. Sounds to me like it breaks your heart not to know. Terrible. Reporter: For "good morning america," david wright, abc news, palos verdes, california. We bring in our legal analyst, dan abrams. The brass tax, missing for almost a week. You have to question the husband. He's the one who says he found her belongis on the beach. And after all, he is the husband. So, these are all things that lead you to number one, want to get as much information from him as you can. And number two, rule him out as a possible suspect. And whether it's snorkeling or free diving, generally, this is something you don't do alone, which is what the husband is claiming. Let's talk about is. There's a lot of talk she may have been free diving, which means you literally go under the water and hold your breath. It's considered dangerous. It's considered the sort of thing you shouldn't do alone. And it's the sort of thing where many people wear weights on their arms or legs, to weigh them down in the water so they can hold their breath, let go of the weights, et cetera. If that were to be the case and she were found, let's say, somewhere in the water, there would be a real question as how do you distinguish from her dying at the hands of someone else, versus dying free diving? That's why it's really important to find her as quickly as possible. Quickly, as police put together some sort of case and the investigation, the mother's claims being made, and the family's claims being made. The mother suggesting there was an affair. I think the mother has questions. It's relevant. It's important. But it's certainly not enough. You hear the authorities making it clear, they don't want to name him anything right now, until they can continue this If you're counseling the husband, do you get in front of this? I think he has to say something. There's a lot of people handing out fliers trying to find her. You have to be one of them. You have to be out front and center, to say at least thank you, for all of the people trying to find her alive. Dan abrams, thank you for that. Now, to the astonishing story of survival and rescue.

This transcript has been automatically generated and may not be 100% accurate.

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