Westminster terror attack claims fifth victim

Andreea Cristea
Andreea Cristea was on holiday with her boyfriend at the time of the attack. (Supplied)

A woman who fell into the Thames river during the Westminster attack has died, bringing the death toll to five.

Andreea Cristea from Romania, who was on holiday with boyfriend Andrei Burnaz, had been in hospital since the attack on March 22.

A statement from her family confirms the tragedy, saying "our beloved and irreplaceable Andreea - wonderful daughter, sister, partner, dedicated friend and the most unique and life loving person you can imagine - was cruelly and brutally ripped away from our lives in the most heartless and spiritless way.

"She will always be remembered as our shining ray of light that will forever keep on shining in our hearts."

Security has tightened since the attack, where Khalid Masood ploughed through crowds on Westminster Bridge and stabbed a policeman to death before being shot himself.