British police declared the incident resolved and lifted the cordon after determining the vehicle to no longer be suspicious.
This comes after earlier in the day police officers have evacuated Westminster Bridge, and people who were at the scene are being kept behind a cordon close to Parliament Square.
According to The Sun, dozens of officers have swarmed the bridge and the surrounding area, and helicopters are flying above.
READ MORE: New IRA Is ‘Prime Suspect' Behind Explosive Devices Found in London — Reports
The incident follows reports on 6 March of three parcel bombs being found at Heathrow, London City Airport and Waterloo station. They all bore Irish postmarks and appeared to have been sent from addresses in Dublin — the stamps used were issued by the Irish postal service for Valentine's Day 2018, featuring a heart motif and the words "Love Eire N".