A fatal dog attack in San Diego’s Mira Mesa community has left one victim dead and another seriously injured, according to the San Diego Humane Society.The attack involved three dogs and has prompted a swift and ongoing investigation by local authorities.

Three dogs attacked their owner at a San Diego park Friday, killing the man and injuring another person, according to authorities and the Humane Society.

Three large dogs fatally attacked their owner at Mesa Viking Neighborhood Park in Mira Mesa, officials said. A second person who tried to help was injured.