Edward Kang, 20, flew from Newark, New Jersey, to Jacksonville, Florida, to confront someone he had an online dispute with, Nassau County, New Jersey, Sheriff Bill Leeper said. Court records show he was charged Monday with second-degree attempted murder and attempted burglary.

A preliminary investigation indicates Kang knew the victim only online, having met him playing a fantasy video game called ArcheAge. According to the game’s website, it is shutting down its North America and European servers this week because of a declining number of users.

The victim, who was not publicly identified, told authorities he took a break from playing video games when he saw Kang standing with a hammer above his head in a “strike position.” His stepfather woke up to the sounds of screams for help and found his stepson on the ground struggling with Kang above him, authorities said.