Christian leaders are involved in a Twitter campaign to help a Christian who has been sentenced to death in Afghanistan.

Said Musa, 45, has been in prison since May 2009 after appearing in a video showing Afghan Christians being baptized by westerners. He was arrested when he attempted to seek asylum at the German Embassy.

Musa converted from Islam to Christianity nine years ago, a crime which is punishable by death in Afghanistan.

Some U.S. Christian leaders have called on the Obama administration and the mainstream media to speak up on his behalf.

It started when Denny Burke, a dean of Boyce College at the Southern Baptist Theological Seminary in Louisville, Ky., appealed to President Barack Obama to "persuade the Afghan government not to execute our brother Said Musa."

"No man should die because he wants to change religion ," Ed Stetzer, president of LifeWay Research, said in a re-tweeted message. He also asked others to re-tweet the message.

Musa has been denied a fair trial and access to a lawyer since being detained. Some defense lawyers have refused to represent him unless he reconverts to Islam.