A 29-year-old woman in Osaka was arrested Monday on suspicion of assaulting a man, who was later confirmed dead, by pouring hot water on him at her home the previous day, police said.

Momoka Taniguchi denied the allegations and was quoted by the local police as saying that the burns on the man, believed to be her live-in partner, were caused by "spilling hot water for instant noodles" and that she had "not poured it on purpose."

The police are investigating his death after multiple cuts were found on the lower half of his body.

Taniguchi claims the man went to the shower after having the hot water spilled on him, and she found him unconscious about 15 minutes later when she went to check up on him, according to the police.