Gunmen stormed into a bar, dragged out eight people and killed them in the parking lot, the first of several shootings in this violent border city Wednesday that left 16 dead, including a man in a wheelchair.
In one incident, a car chase and shootout killed three people in front of an elementary school, creating a panic among students, teachers and parents.
Battles between rival drug gangs have made Ciudad Juarez, across the border from El Paso, Texas, one of the world's deadliest cities. More than 800 people have been killed this year in the city of 1.3 million people.
Armed men burst into the Aristos bar in the middle of the night, said Arturo Sandoval, a spokesman for the Chihuahua state attorney general's office. Eight people were forced out into the parking lot and shot to death.
The victims had not been identified, but Sandoval said at least one appeared to be a teenage boy.
The shootout in front of the Benito Juarez elementary school erupted hours later. Sandoval said a woman and two men were found dead inside a car.
Gunmen in a car chased down another vehicle and opened fire in front of the school around noon, said a teacher who asked not to be quoted by name out of fear for his safety.