A terrorist was shot outside the UK Parliament on Wednesday.

Twelve others were injured in a possible knife attack.

Al Arabiya reported: A least a dozen people have been injured on Westminster Bridge after large bangs were heard outside the British parliament, a Reuters photographer said on Wednesday.

LIVE: Westminster Bridge near UK Parliament in London following reported shooting https://t.co/Abk2AvQI3A pic.twitter.com/I1EgLh8xuk — RT (@RT_com) March 22, 2017

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MORE— A CAR MOWED DOWN SEVERAL PEOPLE IN THE STREET.

UK PARLIAMENT UNDER SIEGE: Eyewitnesses say car mowed down five people. Man w/ knife enters confines of palace. Situation under control. pic.twitter.com/VI5ZGSJ4ZV — 🐸Grant J. Kidney🐸 (@GrantJKidney) March 22, 2017

MORE—-

Man shot by #British police reported to be holding a knife outside of #UK Parliament who allegedly wounded 6

📸 pic.twitter.com/I9RwhSLjHx — Mete Sohtaoğlu (@metesohtaoglu) March 22, 2017

VIDEO FROM WESTMINSTER BRIDGE—

.@metpoliceuk WATCH: a car on Westminster Bridge reportedly mowed down at least 5 people Via @sikorskiradek #Londonattackpic.twitter.com/LlilsU3yPm — Rob S (@RobPulseNews) March 22, 2017

Heavily armed men were seen near Westminster Bridge.

Heavily armed men now lining up out front out Westminster preparing to go in pic.twitter.com/zXQZxWXf4h — Peter Yeung (@ptr_yeung) March 22, 2017

Here is video of the smoking vehicle.