In an interview on “Fox and Friends,” Trump said Zimmerman, the neighborhood watchman who shot the unarmed black teenager after a confrontation, is “no angel” but believed the prosecution had failed to prove its case.
Zimmerman said he had shot Martin in self-defense.
"From a legal perspective I think they did the right thing," Trump added. "A lot of people were surprised they did this although watching the scholars and watching the legal scholars, they absolutely made the right decision."
The Zimmerman trial gained national attention and on Sunday, and President Obama urged the public to accept the jury’s verdict peacefully and "respect the call for calm reflection from two parents who lost "Trayvon Martin.”
Many Democratic lawmakers and civil rights groups, though, are pressing the Justice Department to bring federal civil rights charges against Zimmerman.
The DOJ said Sunday it was reviewing the case.
"Experienced federal prosecutors will determine whether the evidence reveals a prosecutable violation of any of the limited federal criminal civil rights statutes within our jurisdiction, and whether federal prosecution is appropriate in accordance with the Department's policy governing successive federal prosecution following a state trial," DOJ spokeswoman Dena Iverson said in a statement.