A man has been arrested on suspicion of murdering his colleague by dumping heavy construction materials on him using a forklift at a construction company in Oita Prefecture.

Hideyuki Suemitsu, 38, has admitted to killing Takashi Fujita, 53, at the company's storage yard, according to the police.

The Japan Times reports that investigators are looking into possible difficulties between the two.

The two were transferring materials out of the yard at the time of the incident.