A pack of four pit bulls mauled an elderly jogger in Los Angeles County, Calif. As police investigated the death of the unidentified 63-year-old woman, the officers discovered a marijuana-growing operation at one of the properties during their search.

The woman was mauled by the pit bulls in Antelope Valley, located in northern Los Angeles County, and died while being transported to a local hospital, KABC-TV reports. The attack occurred around 9:30 a.m., and a passing motorist tried to stop the attack by honking at the pack of pit bulls, according to Lt. John Corona, from the Los Angeles County Sheriff’s Department. Instead of scaring off the dogs, the pit bulls proceeded to attack the car.

The driver proceeded to call 911 and when law enforcement officials arrived on scene. Three of the dogs had already run away, but one dog was still mauling the elderly woman, KABC-TV reports. That pit bull tried to attack a deputy, and the officer had to fire shots near the dog to scare it away.

Six pit bulls were captured as police searched a property in the community of Littlerock, KABC-TV notes. Earlier in the day, law enforcement officials warned residents to stay indoors and issued a $25,000 reward for the capture of the pit bulls. Police obtained a search warrant for the property in conjunction to their investigation of the mauling death of the jogger. During their search, police found six pit bulls and two unidentified dogs.

L.A. County Sheriff's Department are currently in the process of determining if the dogs taken by animal control were the same dogs involved in the attack, the Los Angeles Times reports. Police uncovered a marijuana-growing operation on the property and arrested a 29-year-old male for the illegal activity.