The trial for four men suspected in aiding terrorists in the Westgate Mall attack in Kenya began on Wednesday, Fox News reported.
Mohamed Ahmed Abdi, Liban Abdullah Omar, Hussein Hassan, and Adan Mohamed Ibrahim are accused of sheltering the Al Shabaab terrorists responsible for the Sept. 21 attack in Nairobi's Westgate Mall, killing 67 people and injuring hundreds.
Prosecutors allege the men committed a "terrorist act" according to Kenya's anti-terrorism laws, in addition to using false documents.
All four suspects maintain their innocence.
Stephen Juma, a mall guard, testified in court that he saw three gunmen jump outside of a vehicle -- one of which immediately killed a shopper.
"I couldn't recognize them since they had covered their heads and faces with black head scarves," Juma said. Kenya police said all four gunmen died in the attack.
Though security forces in Kenya originally said there were possibly a dozen gunmen inside the mall, international officials believe the total number was four and that none of them made it out alive.
"We believe, as do the Kenyan authorities, that the four gunmen inside the mall were killed," the FBI's legal attache in Kenya Dennis Brady said in a statement posted on the bureau's website last week.
"There is no evidence that any of the attackers escaped from the area where they made their last stand."
In contrast, a New York police report claimed there was not enough evidence to officially rule out any escaped attackers.
Al Shabaab -- an Al Qaeda-linked terror group based in Somalia -- said the attack was meant to send a message to Kenya to pull their troops out of Somalia.
The FBI and Interpol joined Kenyan authorities immediately following the attack in locating suspects and bringing them to justice.
The trial will continue on Thursday.
