By Lisa Richwine LOS ANGELES (Reuters) - A California judge on Wednesday rejected a bid by Sumner Redstone's granddaughter to join the media mogul's former girlfriend in a lawsuit that challenges the 92-year-old billionaire's mental competency. The granddaughter, Keryn Redstone, argued in court papers that Sumner Redstone had become a "prisoner in his own home" after the former girlfriend, Manuela Herzer, was ejected from his mansion in October. Herzer, 51, had sued to be reinstated as his designated healthcare agent.
Federal agents have seized a ton of cocaine and seven tons of marijuana smuggled through a clandestine tunnel stretching a half mile beneath the U.S.-Mexico border, the longest one yet unearthed in California, authorities said on Wednesday. Six people were arrested as authorities in San Diego moved on Monday and Tuesday to shut down the tunnel, the 13th underground passageway discovered along California's border with Mexico since 2006. "This is the largest cocaine seizure ever associated with a tunnel," said Laura Duffy, U.S. Attorney for the Southern District of California.