A man went on a stabbing spree at numerous residences in the US state of Illinois, killing four people and injuring at least five others, according to authorities.
The stabbings occurred on Wednesday afternoon, according to a statement from Rockford police, and a 22-year-old suspect was arrested.
The statement said nothing about the suspected motive.
Rockford is located approximately 90 miles northwest of Chicago.
According to authorities, those slain included a 15-year-old girl, a 63-year-old lady, and two males, ages 49 and 22.
The police announcement stated that five persons had been injured, however US media later quoted the authorities as stating seven were injured.