New York and London police are both investigating Hollywood producer Harvey Weinstein, following multiple reports of alleged sexual harassment.
The homemade bomb engulfed a carriage in flames but apparently failed to fully explode. It was Britain's fifth major attack so far this year.
British police say they made a third arrest in Newport, Wales, linked to Friday's tube attack in Parsons Green, London, which injured 30 people.
The arrest was made in the port area of Dover, where passenger ferries sail to France. The train bombing that took place at the Parsons Green underground station injured 30 people.
Arrested on suspicion of terror offences, they are believed to be members of National Action, a banned UK far-right group.
Grenfell Tower recently underwent a refurbishment and investigators suspect that the the cladding might have contributed to the rapid spread of the fire.
British police arrested two teenagers after five acid attacks on moped riders in less than 90 minutes across east London left several people with facial burns, including one with horrific injuries.
London's Metropolitan Police name one attacker as Khuram Shazad Butt, aged 27 and the second as Rachid Redouane, aged 30.
The latest arrest was of a 23-year-old man in Sussex. Britain has lowered its security level from "critical" to "severe," meaning the country remains on high alert a week after the suicide attack killed 22 at a concert in the northern English city.
In the aftermath of the Manchester bombing which killed 22 and injured over 60, UK authorities make a series of arrests as they pursue a possible bombers network.
Police swooped on a man armed with knives metres away from the Houses of Parliament in London, arresting him on suspicion of preparing "acts of terrorism".
The man responsible for killing four people and injuring dozens used techniques that police say were "low sophistication, low tech, low cost."
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