Mass shootings over Halloween weekend leave at least six dead across the US

The deadliest violence was in Dallas, where three shootings in about an hour and 15 minutes on Saturday night killed four people and injured 15 in the nightlife district of Deep Ellum, police said.

"This is a really big scene. It's spread out," Dallas Police Chief Daniel Comeaux said, adding that some arrests were made and that police were still trying to learn whether the shootings were linked.

— Daniel Comeaux, Dallas police chief

Other shootings

• Birmingham, Alabama: one killed, eight wounded
• Bloomington, Illinois: one killed
• Newark, Delaware: six shot
• Fayetteville, Arkansas: six wounded

Shootings also hit nightlife areas near campuses in four other cities, including Bloomington, Illinois, where a 19-year-old woman was killed.

On Friday, two people were killed in separate shootings at Halloween stores in Fairfield, California, and Madison Heights, Michigan, police said.