Ohio shooter's sister among 9 victims

Police say the 24-year-old white man behind a mass shooting in Dayton, Ohio, killed his sister and eight others before he was fatally shot by police.

Authorities say Connor Betts was killed by police less than a minute after he started shooting a .223-caliber rifle into the streets of a popular Dayton nightlife area around 1 a.m. Sunday.

They say his 22-year-old sister, Megan, was the youngest of the deceased victims, who were all killed in the same area. The others were adults ranging in age from 25 to 57.

Mayor Nan Whaley says Betts was wearing body armor and had additional high-capacity magazines. Investigators haven't publicly discussed a possible motive.

It was the second US mass shooting in less than 24 hours.