London Bridge attack: 2 of 3 killers identified

Updated 6:51 PM EDT, Mon June 5, 2017
TOPSHOT - A photograph taken on a mobile phone shows British police cars blocking the entrance to London Bridge, in central London on June 3, 2017, following an incident on the bridge. 
Police are dealing with a "major incident" on London Bridge, Transport for London said on Saturday, after witnesses reported seeing a van mounting the pavement and hitting pedestrians. / AFP PHOTO / Daniel SORABJI        (Photo credit should read DANIEL SORABJI/AFP/Getty Images)
DANIEL SORABJI/AFP/AFP/Getty Images
TOPSHOT - A photograph taken on a mobile phone shows British police cars blocking the entrance to London Bridge, in central London on June 3, 2017, following an incident on the bridge. Police are dealing with a "major incident" on London Bridge, Transport for London said on Saturday, after witnesses reported seeing a van mounting the pavement and hitting pedestrians. / AFP PHOTO / Daniel SORABJI (Photo credit should read DANIEL SORABJI/AFP/Getty Images)
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Police officers escort a person, with their head covered, to a police van, in Barking, east London on June 5, 2017, following a dawn raid on a property (R), as thier investigations continue following the June 3 terror attacks in central London.
Police carried out fresh raids and arrested "a number of people" on Monday after the Islamic State group claimed an attack by three men who mowed down and stabbed revellers in London on June 3, killing seven people, before being shot dead by officers. / AFP PHOTO / Daniel LEAL-OLIVAS        (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
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Police officers escort a person, with their head covered, to a police van, in Barking, east London on June 5, 2017, following a dawn raid on a property (R), as thier investigations continue following the June 3 terror attacks in central London. Police carried out fresh raids and arrested "a number of people" on Monday after the Islamic State group claimed an attack by three men who mowed down and stabbed revellers in London on June 3, killing seven people, before being shot dead by officers. / AFP PHOTO / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
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Emergency personnel on London Bridge after an incident in central London, Saturday, June 3, 2017. British police said they were dealing with "incidents" on London Bridge and nearby Borough Market in the heart of the British capital Saturday, as witnesses reported a vehicle veering off the road and hitting several pedestrians. (Dominic Lipinski/PA via AP)
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Emergency personnel on London Bridge after an incident in central London, Saturday, June 3, 2017. British police said they were dealing with "incidents" on London Bridge and nearby Borough Market in the heart of the British capital Saturday, as witnesses reported a vehicle veering off the road and hitting several pedestrians. (Dominic Lipinski/PA via AP)
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Police officers on Borough High Street as police are dealing with an incident on London Bridge in London, Saturday, June 3, 2017.    Witnesses reported a vehicle hitting pedestrians and injured people on the ground. (Dominic Lipinski/PA via AP)
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Police officers on Borough High Street as police are dealing with an incident on London Bridge in London, Saturday, June 3, 2017. Witnesses reported a vehicle hitting pedestrians and injured people on the ground. (Dominic Lipinski/PA via AP)
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LONDON, ENGLAND - JUNE 04:  Armed police officers stand guard at the perimeter cordon, following last night's London terror attack, on June 4, 2017 in London, England. Prime Minister Theresa May has left the election campaign trail to hold a meeting of the emergency response committee, Cobra, this morning following a terror attack in central London on Saturday night. 7 people were killed and at least 48 injured in terror attacks on London Bridge and Borough Market. Three attackers were shot dead by armed police.  (Photo by Leon Neal/Getty Images)
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LONDON, ENGLAND - JUNE 04: Armed police officers stand guard at the perimeter cordon, following last night's London terror attack, on June 4, 2017 in London, England. Prime Minister Theresa May has left the election campaign trail to hold a meeting of the emergency response committee, Cobra, this morning following a terror attack in central London on Saturday night. 7 people were killed and at least 48 injured in terror attacks on London Bridge and Borough Market. Three attackers were shot dead by armed police. (Photo by Leon Neal/Getty Images)
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(CNN) —  

British police have identified two of the three men behind Saturday night’s terror attack in London as Khuram Shazad Butt and Rachid Redouane.

Butt, 27, was a British citizen who was born in Pakistan, London’s Metropolitan Police said. Police and MI5, the UK’s counterintelligence and security agency, were familiar with him, but there was no intelligence to suggest the weekend attack was being planned, police said.

Butt briefly worked for Transport for London, the entity that oversees the city’s public transport system. He was a trainee customer services assistant with London Underground for less than six months, before leaving in October, a Transport for London spokesperson said.

Redouane, 30, who also used the name Rachid Elkhdar, had claimed to be Moroccan and Libyan.

The third attacker has been identified, police said, but his name has not been publicly released.

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The assailants killed seven people and wounded 48 others by ramming a vehicle into a crowd on London Bridge and then stabbing people in nearby Borough Market.