A man in his 40s accidentally killed a colleague with a lawnmower (South Korea)

In South Korea, a man in his 40s is under police investigation after he killed a colleague with an electric lawnmower while it was running. On the 14th, Muan Police Station in Jeollanam-do (South Jeolla Province) said, "A is under suspicion of negligence resulting in death.
A, who is in his late 40s, was arrested without indictment. A is accused of killing his colleague B (in his 70s) while weeding at a farm in Muan County at around 11:20 a.m. on the 13th.
A, who was working with an electric lawnmower, approached B to ask how to stop the machine, and injured B's leg with the lawnmower that A was using while it was running.
Mr. B was taken to the hospital, but died of excessive bleeding. The two were day laborers employed by the farm, and Mr. A said that this was his first time participating in the weeding work.
say.