Shinichi was having an early walk with his wife Shiho. He had just crossed a bridge when he saw a crowd of people. Rushing to them, he found that they were crowding around a dead woman. Shinichi was a famous detective. He took the case and started his investigation. The woman seemed to have come for an early walk, too. Seeing her handbag lying nearby, as it as a female's bag, Shinichi asked Shiho to ruffle through it and find somethings that will provide the victim's Identity, soon he found what he wanted - her identity card. Her name was Naomi, and her house was about a ten minute drive away. Her number was also written on her card.
Shinichi phoned the given number.
"Is this Naomi's residence?"
"Yes. And I am her husband Misuta. What do you want?"
"Sir, your wife is dead."
"What! No way!"
"Sir, come here quickly."
About ten minutes later, a car pulled up. The husband got down, and on seeing the woman, rushed to her and started crying. Shinichi was about to console him when something hit his mind. He quickly had the husband arrested.
Can you tell why?
Hint
Did the husband come in time? Check for the Phone conversation's details