from the Los Angeles County District Attorney and other reports

Marcos Barbosa Costa, 46, was found guilty of involuntary manslaughter, vehicular manslaughter and reckless driving causing injury in the
fatal April 1, 2009 crash of his trailer truck that killed a 12-year-old girl and her father in La Canada Flintridge.

Angelina Posca and her father, Angel Posca, 58, were both killed in the accident when Costa's brakes failed coming down the Angeles Crest Highway.  He ran a red light at Angeles Crest and Foothill Boulevard, hitting Posca's car and dragging it 150 feet, crashing into six other vehicles and injuring three other people before crashing into a book store and nail salon.

Costa, a Massachusetts resident, was also found guilty of injuring three people in the crash. The jury found him not guilty of two counts of murder, and hung on two charges of causing great bodily injury to two victims and found one allegation of causing great bodily injury not true.

Witnesses testified that Costa ignored warnings from an off-duty firefighter who pulled him over and said smoke was billowing from his brakes.

Costa returns to court on Sept. 8 for sentencing before Pasadena Superior Court Judge Darrell Mavis. Costa faces up to nine years in state prison.