London Bridge terror attack UK
© Neil Hall / Reuters
Forensics investigators work as a white van is carried away from London Bridge, June 4, 2017.
Islamic State has claimed responsibility for the London Bridge terrorist attack, issuing a statement through its propaganda news service on Sunday night.

Islamic State's propaganda news service Amaq claimed its militants were responsible for killing seven people and injuring 48 in central London on Saturday, Rita Katz, Director of SITE Intelligence Group, said on her Twitter page.

Three attackers mowed down pedestrians before continuing the rampage on foot nearby in Borough Market. Armed police shot and killed the attackers within eight minutes.

Seven people were killed and 48 injured in the attack which began at 10pm local time. Shortly after midnight, police officially declared the attacks at London Bridge and Borough Market as "terrorist incidents."

Islamic State (IS, formerly ISIS/ISIL) supporters celebrated the attack in IS-affiliated groups on the encrypted messaging app Telegram in the aftermath of the attack, but the terrorist group did not immediately jump to claim responsibility, the SITE director noted earlier Sunday.

Multiple groups on Telegram shared images calling for more attacks during Ramadan, with supporters referring to each other and the attackers as wolves.

In the aftermath of the Manchester bombing, IS message boards on Telegram featured propaganda banners that also referenced previous attacks in Brussels and Paris.