British Prime Minister Theresa May blamed "evil" Islamist ideology Sunday for an attack by knife-wielding men who mowed down and stabbed revelers in London, killing seven, as police said they had arrested 12 suspects.

Britain's main political parties suspended campaigning Sunday for this week's election after an attack in London left seven people dead -- although the UK Independence Party (UKIP) said it would carry on.

Russian President Vladimir Putin on Sunday condemned the "cruelty and cynicism" of the London attack and called for greater joint efforts in the fight against terror, the Kremlin said.

President Donald Trump offered U.S. help Saturday to Britain in response to twin attacks in London that killed six people, after a van plowed into pedestrians and assailants stabbed others.

British and world leaders on Sunday condemned the attacks in Central London, reacting with both outrage and solidarity.

Three assailants smashed a van into pedestrians on London Bridge before attacking revelers in a popular nightlife hub with knives, leaving seven dead in the third deadly terror attack in Britain since March.

Maltese voters flocked to the ballot boxes Saturday in an early general election called against a backdrop of corruption allegations that have cast a shadow over Joseph Muscat's government and the island nation's thriving economy.

Pre-vote polls pointed to 43-year-old Muscat's Labour Party (PL) retaining power, four years after it swept into office on a redistributive, pro-business and socially liberal platform which has sustained Malta's recent economic success story.

Turkish Prime Minister Binali Yildirim's chief adviser was detained Saturday over suspected links to the movement of US-based Muslim cleric Fethullah Gulen blamed for last year's failed coup, state media reported.

Birol Erdem, a former senior justice ministry official, was taken into custody in Ankara along with his wife Gulumser Erdem, Anadolu news agency said.

Pakistan has frozen the accounts of 5,000 suspected terrorists, taking about $3 million out of their pockets, but Islamabad could still come under scrutiny at a crucial June meeting of an international watchdog that tracks terror financing.

Analysts and government officials say political foot-dragging and sympathetic supporters throughout Pakistan makes it difficult to cut off the money supply to banned terrorist groups.

A fire at a shopping center in southern Fars province early Saturday injured 37 people, according to Iranian state TV.

The fire in Shiraz city was preceded by an explosion, IRIB reported.