The statement was recorded after they were summoned at the Aluva Police Club yesterday by a team of officials headed by ADGP B Sandhya.
The over 12 hour long procedure, began at 12.30 pm yesterday, concluded at 1.05 am today.
"All issues related to the case were discussed", Dileep said after emerging from the Police Club.
Police said they will be summoned again if necessary.
A senior police officer said it was done for not giving a clean chit to anyone.
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Dileep said police recorded his detailed statementon his complaint on April 20 alleging blackmail by a man, who claimed to be a friend of the prime accused in the case of abduction and assault of a South Indian actress.
"I am very confident", Dileep said. The investigation is progressing very well", the actor said, adding it was his need to see that the truth was revealed in the case.
Dileep said he would attend the crucial general body meeting of the Association of Malayalam Movie Artists, in which the issue is expected to be discussed.
Before heading to the police club at nearby Aluva yesterday, Dileep had alleged that some people were making efforts to make him an accused in the case.
"That is not going to happen," he had said.
Dileep had also said he does not have time to sit for "media trial by some persons".
"I will tell the police and in the court whatever I want to say (in the case)," he had said.
The actor had earlier said he filed the complaint with the Director General of Police that day along with evidence of blackmailing, allegedly with the knowledge of 'Pulsar' Suni.
He had said that Vishnu, who claimed to have shared a cell with Suni in jail, told him that some people in the Malayalam film world had offered money to Suni if he stated during questioning that Dileep was a conspirator in the case.
Nadirshah had also claimed Vishnu had offered to give him money for helping to trap Dileep in the case.
Six persons, including 'Pulsar' Suni, Martin and Vigeesh have been arrested in connection with the incident.
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