Seven people have been killed and at least 48 injured in central London after three men drove a van into pedestrians on London Bridge and launched a knife attack on people enjoying a Saturday night out in pubs and restaurants around Borough Market.
A white van hit pedestrians on London Bridge at about 22:00 BST on Saturday, then three men got out and stabbed people in nearby Borough Market.
One witness, Gerard, told the BBC he saw a woman being stabbed "10 or 15 times" by men shouting "This is for Allah".
The three suspects were shot dead within eight minutes of the first 999 call being received.
Mrs May said the UK's counter-terrorism strategy would be reviewed, as she promised to step up efforts to combat Islamist ideology and work with other countries to prevent the internet being a "safe space" for terrorists.
http://www.bbc.com/news/uk-40148737
http://www.bbc.com/news/uk-england-london-40147164
Third attack in a span of three months. Absolutely horrible.