A man who witnessed one of several stabbings in the space of two hours in Birmingham has said he saw the attacker stab a woman "several times" in the neck – and a male victim "covered in blood".
A murder investigation has been launched after one man died and seven other people were injured, two seriously, following the "random" series of attacks in the city centre overnight.
Police are hunting for an unknown male suspect.
Bar owner Savvas Sfrantziz told Sky News he saw the man, who he described as "a black guy between 20 and 25, wearing a black hoodie with two white stripes on the front, black trousers and a black cap".
Mr Sfrantziz said: "I saw him stabbing the girl several times in the neck. I was only about 20 yards away.
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"She started screaming: 'He's stabbing me.' But everybody thought he was robbing her because she had a necklace.
"But I saw it and I started screaming."
The suspect, he said, "wasn't panicking" after stabbing the woman and was "just walking" away.
Mr Sfrantziz, who owns the Mykonos bar on Hurst Street, where the last of four attacks identified by police took place, said he couldn't go near because "I saw the knife".
The suspect was chased away by two other men, he added.
Police were called, he said, but most people "thought it was just a robbery".
"Then I screamed that a girl was stabbed," he added.
The attacks took place across several streets between 12.30am and 2.30am on Sunday, according to West Midlands Police, and Mr Sfrantziz said there were still plenty of people in the area.
He said: "It was a busy time and people started panicking when they saw the girl on the floor – and there was another guy further up in the middle of the road.
"You could see blood all over the English guy. The girl was unconscious – but the guy was screaming 'he stabbed me' and swearing at his attacker. It happened within seconds."