FACTBOX-Who is Henry Okah?

July 13 (Reuters) - Nigerian militant leader Henry Okah, accused of gun-running and treason, was released from jail on Monday, a federal court judge said.

Here are some key facts about Okah:

* OKAH ON TRIAL:

-- Henry Okah was the suspected leader of the rebel Movement for the Emancipation of the Niger Delta (MEND). From the end of May 2007, his forces mostly observed a ceasefire to allow peace talks with the government to go ahead.

-- Okah however refused to join the peace talks and continued to make threats and predict all-out civil war in the delta.

-- Okah was arrested in Angola in September 2007 while on a business trip and extradited to Nigeria in February 2008. Azuka Okah had said her husband was in Angola to inspect a ship he was hoping to buy and was on his way back to South Africa when he was arrested. -- Nigeria charged Okah with treason and gun-running in March 2008.

-- He faced the death penalty if convicted. The MEND was behind a wave of attacks on the Nigerian oil industry in early 2006 that forced the closure of a fifth of oil output from Africa's biggest producer, contributing to a surge in oil prices on international markets. -- In May 2009 prosecutors reduced the charges against Okah to three counts -- treason, treasonable felony and conspiracy -- from 62 but no plea at the court in Jos was taken.

-- The government withdrew its case on Monday and Okah was released.

* SOME LIFE DETAILS: