Solve this murder case:
a man was found murdered at his house on wednesday afternoon of 15/8/2007 at 12.35 pm at delhi.
his wife called the police. the police questioned everyone.
wife: i was sleeping.
neighbours: we were out to attend a wedding.
driver: i had gone to the bank.
cook: i was away to the market.
watch man: i went out-of-town to meet my relatives.
the police arrested the murderer immediately.
who's the murderer?