Eight people, many of them women of Asian descent, have been killed in shootings at spas in the US state of Georgia.
Police say the shootings took place at a massage parlour in Acworth, a suburb north of Atlanta, and two spas in the city itself.
South Korea later confirmed that four of the victims were of Korean descent.
Officials say a 21-year-old man was arrested and is suspected of involvement in all of the attacks.
No motive has yet been established, but there are fears the crimes may have deliberately targeted people of Asian descent.
Hate crimes against Asian-Americans spiked in recent months, fuelled by rhetoric that blames them for the spread of Covid-19.
In an address last week, President Joe Biden condemned "vicious hate crimes against Asian-Americans who have been attacked, harassed, blamed and scapegoated."
The first happened at about 17:00 (21:00 GMT) on Tuesday at Young's Asian Massage in Acworth, Cherokee County.
Two people died at the scene and three were taken to hospital, where two more died, sheriff's office spokesman Capt Jay Baker said. He later confirmed the victims were two Asian women, a white woman and a white man, and said a Hispanic man had been wounded.
Less than an hour later, police were called to a "robbery in progress" at Gold Spa in north-east Atlanta.
Map shows the location of the shootings in Atlanta
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"Upon arrival, officers located three females deceased inside the location from apparent gunshot wounds," police said.
While there, officers were called to a spa across the street, called Aromatherapy Spa, where they found another woman shot dead.
Police quoted by the Atlanta Journal-Constitution said all four Atlanta victims were Asian women.
Investigators who had studied CCTV footage then released images of a suspect near one of the spas. Police said that, after a manhunt, Robert Aaron Long, of Woodstock, Georgia, was arrested in Crisp County, about 150 miles (240km) south of Atlanta.
Robert Aaron Long, 21, of Woodstock in Cherokee County poses in a jail booking photograph after he was taken into custody by the Crisp County Sheriff"s Office in Cordele, Georgia, U.S. March 16, 2021.
Capt Baker said investigators were "very confident" that the same suspect was the gunman in all three shootings.
The identities of the victims have not yet been made public. Authorities in South Korea said they were working to confirm the nationalities of the four women of Korean descent.
