George Zimmerman is running out of money to pay for his legal defense, his lawyers say on a website set up to solicit donations.

Zimmerman, a former neighborhood watch volunteer, is charged with second-degree murder in the shooting death of Trayvon Martin, an unarmed black teenager, on Feb. 26, 2012, in SanfordFla. He has pleaded not guilty.

On Wednesday, Mark O’Mara’s firm, which runs the website GZDefenseFund.com, tweeted that there was an update to the site. In the update, the lawyers say they are preparing for a hearing on Zimmerman’s self-defense claim, possibly in April, but need money in order to pay legal expenses.

Read more at NBC News