Police investigating the London Bridge terror attack have arrested a 19-year-old man in east London.
The teen was held on suspicion of preparing terrorist acts after officers stormed an address in Barking on just before 10pm Sunday, Scotland Yard said.
Detectives from the Metropolitan Police's Counter Terrorism Command were searching the address and another in Barking where a 28-year-old man was arrested on Saturday.
A total of seven men are being held in custody under terror laws after the June 3 atrocity that left eight dead and dozens wounded.
Vigil for London Bridge terror attack
The arrests came as an Australian café worker described being stabbed in the throat in the attack as she cowered in the corner of her Borough Market workplace.
Australian Candice Hedge was working at Elliot's Cafe when terrorists Khuram Butt, Rachid Redouane and Youssef Zaghba launched their van and knife rampage.
The 34-year-old told Australian TV reporters: "They were behind me so I couldn't see, one was standing basically beside me as I was huddled down in the corner. I did see one of our customers get stabbed by one of the guys and the one who was standing beside me was shouting."
Aftermath of London Bridge and Borough Market terrorist attack
Ms Hedge said it was "one quick go and that was it. I was vomiting blood".
Describing her horror as blood gushed from the wound, she told the Sunday Night progamme: "I was thinking, I don't want to die."
On Sunday police released images of the terrorists' blood-spattered fake suicide belts.
The phoney bombs were simply disposable water bottles wrapped in silver and black tape and attached to leather belts, although they were designed to create "maximum fear", police said.
Metropolitan Police Commander Dean Haydon praised the bravery of the police officers and members of public who tackled the three - despite the possibility they could have been killed in an explosion.
One week on from the atrocity, revellers returned to the Borough Market area in a show of defiance, although the market is expected to remain closed into this week.
On Sunday Southwark Cathedral, which had remained shut since it was reportedly stormed by armed police during the attack, reopened.
Detectives have made 21 arrests as part of the probe.
Twelve people arrested in the initial stages were released without charge.
A 27-year-old arrested under the Terrorism Act on Tuesday was also released without charge on Saturday.
A man arrested on suspicion of drugs and firearms offences in connection with the investigation was bailed until a date in late June.
