SINGAPORE - President Tony Tan Keng Yam and Prime Minister Lee Hsien Loong have written to Britain's Queen Elizabeth II and Prime Minister Theresa May respectively to convey their condolences on Thursday (March 23), following the terrorist attack in Westminster, London, the day before.

President Tan wrote to say that he was "deeply saddened" by the vicious attack which killed three people, including a police officer, near the British Parliament and injured about 40 others. The alleged attacker was shot dead.

"On behalf of the people of Singapore, I convey our deepest condolences to the families who lost their loved ones, and whose lives have been affected by this horrific incident. We wish those injured a speedy recovery," he wrote.

"Singapore strongly condemns this senseless and horrific terrorist act. Singapore stands in solidarity with the United Kingdom during this difficult time, and in the broader fight against terror," Dr Tan added.

PM Lee also extended his condolences to the families of the bereaved and wished the injured a quick recovery.

"Singapore strongly condemns this attack, and stands in solidarity with the United Kingdom against such acts that attempt to incite fear, create divisions and disrupt our lives," wrote Mr Lee, who is in Vietnam on a four-day official visit.

" I am confident that the British people will overcome this challenging period with dignity and fortitude."

No Singaporeans were injured in the attack, the Ministry of Foreign Affairs said in a statement on Thursday.