Flash Flood Watch
until MON 12:00 AM MST, Northwest Plateau, Lake Havasu and Fort Mohave, Northwest Deserts, Grand Canyon Country, Coconino Plateau, Yavapai County Mountains, Little Colorado River Valley in Coconino County, Little Colorado River Valley in Navajo County, Little Colorado River Valley in Apache County, Western Mogollon Rim, Eastern Mogollon Rim, White Mountains, Northern Gila County, Lake Mead National Recreation Area, Yavapai County Valleys and Basins, Oak Creek and Sycamore Canyons, Western Pima County including Ajo/Organ Pipe Cactus National Monument, Tohono O'odham Nation including Sells, Upper Santa Cruz River and Altar Valleys including Nogales, Tucson Metro Area including Tucson/Green Valley/Marana/Vail, South Central Pinal County including Eloy/Picacho Peak State Park, Southeast Pinal County including Kearny/Mammoth/Oracle, Upper San Pedro River Valley including Sierra Vista/Benson, Eastern Cochise County below 5000 ft including Douglas/Wilcox, Upper Gila River and Aravaipa Valleys including Clifton/Safford, White Mountains of Graham and Greenlee Counties including Hannagan Meadow, Galiuro and Pinaleno Mountains including Mount Graham, Chiricahua Mountains including Chiricahua National Monument, Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon, Santa Catalina and Rincon Mountains including Mount Lemmon/Summerhaven, Baboquivari Mountains including Kitt Peak, Aguila Valley, Northwest Valley, Tonopah Desert, Gila Bend, Buckeye/Avondale, Cave Creek/New River, Deer Valley, Central Phoenix, North Phoenix/Glendale, New River Mesa, Scottsdale/Paradise Valley, Rio Verde/Salt River, East Valley, Fountain Hills/East Mesa, South Mountain/Ahwatukee, Southeast Valley/Queen Creek, Superior, Northwest Pinal County, West Pinal County, Apache Junction/Gold Canyon, Tonto Basin, Mazatzal Mountains, Pinal/Superstition Mountains, Sonoran Desert Natl Monument, San Carlos, Dripping Springs, Globe/Miami, Southeast Gila County

Police: 4 dead, 1 in custody following shooting in Casa Grande

Image 1 of 4

Police in Casa Grande say they don't a motive yet after four people have been found fatally shot inside a housing duplex near State Route 387 and McMurray Boulevard.

Officials say it's an isolated crime, the shooter knew the victims and it appears to stem from some kind of domestic issue.

Police and medical personnel discovered the victims "in a duplex type of residence" about 8:45 p.m. Thursday following a 911 call about gunfire.

The names of the four adult victims haven't been released and police say it's unclear if they are all related.

Police say two males are now in custody in connection with the shooting. Their names were not released.

They say weapons have been recovered, but it's still unclear if they were used in the killings.

Casa Grande is 41 miles south of Phoenix.

>>SkyFOX video from the scene: https://facebook.com/FOX10Phoenix/videos/1528581457190396

The Associated Press contributed to this report.