Sussex Police
Murder investigation launched into death of Maryna Kavaliauske.
A 35-year-old man held after Friday night incident.
The relatives are believed to be grandfather and grandson.
Price fighting for 'Harvey's Law', which would make online abuse a specific criminal offence.
60 cats were missing initially.
The hunt says it 'does not condone any form of violence'.
The driver had refused to stop for police just minutes before the fatal smash.
Residents said they could smell 'burning plastic'.
150 people required treatment this weekend.
French connection ruled out, as authorities probe 'leak'.