MARTINEZ, California (CNN) -- The wife of a prominent San Francisco Bay Area lawyer was beaten to death over the weekend, and the investigation into her slaying remains "wide open," a sheriff's spokesman said Monday.Pamela Vitale, 52, was found dead Saturday evening. Her husband, attorney Daniel Horowitz, 50, reported finding her dead at a trailer where the couple was living while they oversaw construction of a new home in the hills outside Lafayette, east of Oakland.Medical examiners concluded that Vitale died from blunt trauma to the head, said Jimmy Lee, a spokesman for the Contra Costa County Sheriff's Department.Lee criticized the "rumors and misinformation" surrounding the case, including reports Monday that an arrest in Vitale's slaying was imminent."No one is under arrest. We have nobody in custody right now. This is still a wide-open investigation," he said.Attorney and friend Ivan Golde told KTVU-TV earlier in the day that police were closer to solving the case, according to The Associated Press."I don't think this situation involves a former client. I think the police kind of know, have some leads," he told the TV station. "I'm really not at liberty to comment on specifics right now. I think they are getting closer."Horowitz has represented numerous high-profile defendants and appears frequently as a legal analyst on cable television networks, including CNN. Horowitz, along with Golde as co-counsel, spent the past week representing murder defendant Susan Polk, who is accused of stabbing her millionaire husband to death in 2002.Polk's trial began October 12 in San Francisco, but the judge in that case declared a mistrial Monday after Vitale's death. Michael Cardoza, a fellow lawyer and a friend, said Horowitz was devastated by his wife's killing."I could hardly understand what he was saying because he was sobbing so deeply," Cardoza said.Lee said detectives have interviewed Horowitz, describing him as cooperative."We're not focused on anyone, nor have we ruled anyone out," Lee said. Horowitz and Vitale married about 10 years ago, and both had previous marriages, the AP reported.After the death, a deputy stood watch Sunday at the bottom of the steep driveway leading to the home, with a canopy of trees obscuring views of the sprawling estate, according to the AP.Copyright 2005 CNN. All rights reserved.This material may not be published, broadcast, rewritten, or redistributed. Associated Press contributed to this report.