Henry Okah faces 13 charges including terrorism for the attack in the country's capital,
The streets were cordoned off and inside the court there was tight screening.
Okah is believed to be behind
When two cars exploded in the capital
Two years later, Okah is finally in court and the state says it will prove his involvement in masterminding the attack.
An estimated 50 witnesses will be called and some of them are men who participated in the bombings.
The state will also use audio recordings, visuals and cell phone records.
But Okah's wife and his supporters charge that the evidence was fabricated.
Azuka Okah, Henry okah’s wife, says that the police have no evidence, while the Niger Delta’s Youth Coalition's, Wemike Douglas, says that Okah is being used as a political scape-goat.
Okah sat stone-faced as his 13 charges were read.
His lawyers will call 143 witnesses to testify. They also want him released on bail.
Today, the Minister of Niger Delta Affairs and Okah's long time friend testified for the state. He testified that Okah was widely respected.
His cross examination continues tomorrow.