Kasab told the court that the crime branch forced the him to confess before the magistrate in Feb 2009.
He alleged that the crime branch had threatened to give him electric shocks if he did not confess before the magistrate.
The main accused in the terror strike which killed over 160 people also denied to have ever told the police anything about Kuber boat, which was hijacked by the terrorists and used to infiltrate the country's coast.
"I did not tell the police anything about Kuber boat and the dead body found on the boat," Kasab told the court.
"I have never seen Kuber boat; crime branch and FBI had showed me pictures of Kuber and my clothes and articles seized from the boat. These articles must belong to either fishermen or smugglers. The AK 47 rifle may belong to the police and it is not mine," he added.
When Kasab was shown the identity card recovered from his trouser pocket, Kasab refused to identify himself and said that the trouser was not his.
"It's not me. Trousers are not mine, I was wearing leather pants," he claimed.
He spoke on the same lines when asked about the money seized from him.