Kevin Weetman, who ordered the attack, is believed to have been targeting the son of Sheila Jackson.
A pilot has been arrested and is being questioned after another pilot was stabbed, officials say.
Passengers and crew overpowered the attacker and safely landed the plane in Saudi Arabia.
Police said the driver "may have been experiencing a medical emergency" before hitting four people in British Columbia.
The hikes are part of immigration policy changes introduced to manage Japan's growing foreign population.
The death by lethal injection was scheduled to happen earlier on Wednesday before a lower court paused the execution.
Rantzen, who fronted the BBC's That's Life for two decades, went on to found Childline, and in recent years had been a c...
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