Mr James Ineh, an Assistant Director with the State Security Services (SSS), told the Federal High Court on Wednesday that Mohammed Ndume gave Mohammed Adoke's telephone number to the Boko Haram.
The News Agency of Nigeria (NAN) reports that Ndume, a serving Senator from Borno is standing trial for allegedly having links with Boko Haram.
The accused has, however, said that he established the link to facilitate peace as a member of the Presidential Committee on Security in the North East Zone.
Ineh, who was the Chairman of the Special Investigation Panel (SIP) set up to investigate Ndume, said that a former spokesman of Boko Haram, Ali Konduga, revealed the information to the panel.
Ineh said that Konduga informed the panel that Ndume obliged him with the GSM telephone number of the Minister of Justice and Attorney General of the Federation.
The witness said the number was used to bargain a governorship petition filed by the People's Democratic Party (PDP) in Borno state.
Ineh said that Konduga had testified that the calls to the AGF were threats to spur him to influence the governorship Election Tribunal members to cede the election victory to PDP or risked mayhem in the State.
He explained that the name of the AGF was dragged into the panel report submitted on Nov. 25, 2011 on the grounds that his GSM number was found in Konduga's telephone set.
Ineh said Konduga's transaction with the AGF was a threat to the Minister's life, adding that the accused facilitated it by giving out Adoke's telephone number to a senior official of Boko Haram.
Ineh, in his testimony, further said that the items found in the accused's telephone were indicative of his close connection with the dreaded group.
"The fact that Konduga was tried and convicted of terrorism acts is enough to show that the accused is also liable," he said.
Justice Gabriel Kolawole adjourned the matter to Nov. 1, Nov. 5 and Dec. 11 for continuation.