Lawyers for at least three Nigerians charged with plotting a coup against the government have demanded prosecutors hand over all evidence against their clients.

The lawyers said Thursday the state has failed to provide them with much of the evidence that allegedly implicates the men.

In response, the prosecution asked for more time to study the defense's application and the judge adjourned the trial until November 15.

At least three Nigerians, including the former security chief to late dictator Sani Abacha are accused of plotting to shoot down President Olusegun Obasanjo's helicopter and overthrow his government.

Reuters news agency says the government has dropped charges against two additional men.

Some information for this story provided by AP and Reuters.