SAN FRANCISCO -- A man charged with murder in the traffic deaths of a cab driver and his passenger in San Francisco earlier this month pleaded not guilty to several counts Thursday in San Francisco Superior Court.

Kevin McGuinness, 43, of San Francisco, was arraigned in the courtroom of Judge Perker Meeks. He pleaded not guilty to two counts of second-degree murder, two counts of vehicular manslaughter and two counts of drunken driving causing bodily injury, according to district attorney spokeswoman Debbie Mesloh.

McGuinness allegedly slammed his Toyota Tundra pickup truck into a taxicab after running a stop sign while driving drunk shortly before midnight on Oct. 9, according to police.

He was also reported involved in another hit-and-run crash moments earlier, near the corner of Polk and Washington streets. The victim of that crash apparently followed McGuinness down Broadway, reporting his erratic driving to police as McGuinness blew stop signs and red lights.

The taxicab had just begun to cross Broadway on Webster Street when McGuinness allegedly ran a stop sign and T-boned the cab. The driver, 76-year-old Zareh Soghikian of San Francisco, and front-seat passenger 21-year-old Tyler Brown of Marion, Massachusetts, who was an undergraduate student at Duke University, were killed.

McGuinness has two prior misdemeanor DUI convictions in Sonoma County and one in San Francisco. According to court documents, he completed a drunken driving treatment program in San Francisco in 1997.