More on this is coming out:
"Palmira Silva, a widow and grandmother described as “such a sweet lady” by one neighbour, was killed outside her home in Edmonton in a random but frenzied assault by a 25-year-old.
Witnesses said they saw the man, wielding a foot-long blade, attack a passing vehicle and a cat before roaming back gardens looking for a victim."
Sounds like a guy gone crazy, I mean he tried to behead a cat FFS, I hope the cat escaped unharmed.