Property records show Burillo's full name is Javier Burillo Azcarraga, a wealthy property developer known for lavish hotels and restaurants throughout Mexico.
Cronin declined to discuss Burillo's links to the Azcarraga family, which founded Grupo Televisa SA, a media empire that produces Spanish-language television programming seen across Latin America and dominates news coverage in Mexico.
"I know him as Javier Burillo," Cronin said, adding that the developer is a well-known and liked member of the Tiburon-Belvedere community. Cronin wouldn't confirm his full name.
Burillo's older son had cuts to his leg and was transported to a hospital. He spoke to investigators but Cronin wouldn't say what he told them.
"It's a tragedy. We're all heartsick about it. The community is shocked," he said.
Online jail records indicate he was released on US$1 million bail Monday afternoon.
US property records show Burillo's Marin County home was purchased in 2004 for US$10.2 million. US records show he and his wife, Rose, also own properties in San Diego and Sausalito.
A New York Times story about his February 1989 wedding to Alejandra Aleman, the daughter of late Mexican President Miguel Aleman, said he owned Casa de Campo, a resort and restaurant in Cuernavaca, the Hotel Ritz in Acapulco, and other real-estate holdings.
- AP