George Zimmerman’s court problems may not be over. 

A federal grand jury convened Wednesday and will determine if there’s enough evidence to indict Zimmerman violating Trayvon Martin's civil rights.

The documents related to the case are sealed and few details are being released as to what is happening on either side. 

But we do know that a former friend of George Zimmerman, Frank Taaffe said he has been subpoenaed to testify. 

A federal grand jury will hear testimony on whether George Zimmerman violated Trayvon Martin's civil rights the night he was shot. 

News 13 was able to get in touch with Frank Taaffe over the phone, who confirmed he's been subpoenaed to testify. Taaffe said the case has been deferred until next Wednesday. 

Taaffee, a former neighbor and outspoken supporter of Zimmerman, changed his story after Zimmerman was found not guilty of second-degree murder. He then said he believed Zimmerman racially profiled Trayvon Martin. He's now been called to go before the grand jury to testify. 

Our News 13 Legal Analyst David Jancha explained what will likely happens during these proceedings. 

"It's somewhere between 16 and 23 individuals that will be in there. They will have to come to a majority decision to decide whether or not they are going to indict George Zimmerman," said Jancha. "I am unaware of anything that came out during the state trial that shows racial prejudice if there is it should be prosecuted and their should be an indictment.  Without being in there is hard to say what is going to happen."

The FBI would only confirm that there is an ongoing investigation into the civil rights violation. 

Our legal experts say it is unlikely that George Zimmerman will make an appearance here when this happens. 

But according to his former friend - Frank Taaffe - it will happen next Wednesday.

In October the Washington Post reported that there would likely be no federal charges brought against Zimmerman because of insufficient evidence citing three law enforcement officials with knowledge of the case.