Zale Thompson stalked police officers before attack

1. A man attacked 4 NYPD officers with a hatchet in Queens.
2. After he wounded two, the other officers shot him to death.
3. One officer hit in the head is in critical condition.
4. One passerby was struck by a stray bullet in the lower back.
5. Senior officials say they don’t know if this is terror-related.
6. The man made social media posts about guerrilla-style attacks.
7. The man also has a previous criminal record.