NEW YORK (CBSNewYork) -- Police have released the names of two of the three suspects in a terror attack that left seven people dead and nearly 50 others injured in London on Saturday night.
Three men used a van to mow down pedestrians on London Bridge before getting out and stabbing people in Borough Market, a busy area popular with tourists. Police shot and killed the three attackers.
On Monday, police identified two of the suspects as 27-year-old Khuram Shazad Butt and 30-year-old Rachid Redouane, both from the east London town of Barking, where police had raided six homes as part of the investigation.
Butt was a British citizen who was born in Pakistan. Redouane, who also used the name Rachid Elkhdar with a different birth date that would make him 26 years old, had claimed to be Moroccan and Libyan, police said.
Authorities were still trying to identify the men's accomplice, CBS2's Teri Okita reported.
Two days after the killings, security was noticeably tighter on the streets of London. Many residents were determined to adhere to the old wartime slogan 'keep calm and carry on.'
"They've had no effect on me at all, except for sheer emotion at the horror of it all," Helen Dartolme said.
Police detained more suspects in raids in east London on Monday as authorities work to confirm the identity of the third suspect. Twelve people have been detained; two were released.
Thirty-six people remain hospitalized; 18 are in critical condition.
The incident was the third terrorist attack in England since March, but rather than fear, many have expressed anger.
"London stands in defiance against this evil act," London Mayor Sadiq Khan said.
On Monday night, crowds gathered for a memorial at Potters Fields in London. The park is just a short walk from the scene of the tragedy.
One of the victims killed in the attack has been identified as Canadian Christine Archibald, who had accompanied her fiance on a business trip to London.
His brother spoke with Canadian TV.
"He saw the mayhem that was going on, he ran up and tried CPR on her and she passed in his arms," Mark Ferguson said.
In the East London neighborhood where police are investigating residents expressed shock.
One said he saw the van on Friday.
"The van was parked here, so blocking people that were trying to go this way and everyone trying to tell him to 'move, move, move,'" said resident Michael Mimbo.
British Prime Minister Theresa May wants tougher security measures after the third major attack in England in three months.
"This was an attack on London and the United Kingdom but it was also an attack on the free world," May said.
Security remains tight at London Bridge, but people are doing their best to go about their daily lives.
Forensic experts collected evidence while people placed flowers in tribute to the victims.
ISIS has claimed responsibility for the attack.
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