A second arrest has been made after a man was killed by lorry when he ran into a road to flee a dispute.
A 27-year-old man from Dudley is being questioned by police after being arrested on suspicion of manslaughter.
It follows the death of a 26-year-old man who was hit by the vehicle along Thorns Road, Quarry Bank, at around 3.30pm on Tuesday.
A 21-year-old man arrested in Quarry Bank on Wednesday has been released without charge, police have confirmed.
Police have refused to confirm or deny the 26-year-old man was being chased by an attacker wielding a hammer.
But they believe the man, who has not been identified, had been involved in a dispute with another man near the Formula 1 Hand Cash Wash minutes before the crash which killed him.
Officers are questioning the arrested man at a police station in the West Midlands.
They are still appealing for witnesses to come forward.
Video appeal for witnesses by West Midlands Police:
Police confirmed a post mortem had taken place on the 26-year-old although results were still awaited.
Det Sgt Jim Munro, of the Force CID, urged anyone who had any information about the dispute the man was involved in just before the collision to get in touch on 101 or Crimestoppers anonymously on 0800 555 111.