Police have the home where he is holed up surrounded and negotiations between the suspect — identified as Rodrick Dantzler, 34 — and authorities are continuing, Belk said.
The hostage who was released was a 53-year-old woman, said Belk. She was unharmed.
Dantzler is suspected of killing seven people in two shootings, including two children, Belk said. Police had previously said that just one child was among the victims.
Police believe the two shootings could be related and that the suspect knew at least one individual at both locations, according to Belk.
Dantzler ran into the home after a roughly 15-minute chase from the police, said police spokesman Jon Wu. Shots were fired and a female pedestrian was wounded by gunfire during the chase, he said.