Mr Wactor said his brother had been walking a female colleague back to her car when the incident took place around half-past three on Saturday morning.
“We’re Southern, born and raised, and we would never let a female walk to their car by herself,” he said.
Scarlett Wactor, his mother, said her son had been working at a bar and had stayed behind late to clean, before heading back to his car.
‘A huge hole in all of us’
She described her son as a “light in a dark room”, adding: “There is a huge hole in all of us, and there is no fixing that.”
“I think that when I see Johnny on the videos and the recordings, I can only hope that he’s doing that in heaven and enjoying it,” she added, according to NBC News.
Marco Cuadros, the actor’s manager, described him as a “kind soul, a talented actor and an inspiration to those around him”. His death was a “senseless tragedy”, he said.
In addition to appearing in 164 episodes of General Hospital, Wactor starred in NBC’s 2013 supernatural drama series Siberia and also had a role in the acclaimed HBO science fiction/Western series Westworld.
He was scheduled to appear in three new productions, it was reported.