Missouri Teenage Shooting: Police To Name Officer Involved Today, FBI launches investigation.....

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The officer under investigation for the shooting death of unarmed Missouri teen Michael Brown will be identified within the next 24 hours, police said yesterday.

Ferguson Police Chief Thomas Jackson told ABC News he would be holding a press conference to announce the officer's name sometime within the next 24 hours, by 2 p.m. Tuesday.

Earlier today the FBI announced it had opened its own investigation into the case, in addition to the investigation being led by St. Louis County police.

The FBI is "reviewing" the shooting death of an unarmed teenager by a police officer, federal authorities said today.

Brown's death sparked outrage in the community and across the nation. One witness, Piaget Crenshaw, told ABC News that Brown was facing the officer with his hands raised in the air when the officer shot him.

The struggle began when the officer encountered two men, one of whom was Brown, in the street outside of an apartment complex, and one of the men pushed the office back toward his squad car, according to police.

 A shot was fired inside the squad car and then multiple shots were fired at Brown outside the car, killing him, authorities said.

A candlelight vigil was held Sunday night in Brown's honor.

The vigil later erupted into violence, with some individuals breaking into stores and looting goods while others vandalized police vehicles. A fire broke out in a QuickTrip store that had been looted.

It is still unclear what exactly happened when Brown was killed on Saturday, but the episode evoked a string of recent racially-charged cases that includes the shooting death of Trayvon Martin. Brown’s family has hired attorney Benjamin Crump, who was also the attorney for Trayvon Martin’s family, Crump announced early Monday morning.

Police have said that it appears Brown was shot following a physical altercation with a police officer at his cruiser and a struggle involving the officer’s gun. But authorities have not said what exactly resulted in Brown being shot multiple times nearly three dozen feet from the officer’s car.

Crump, speaking at a news conference on Monday evening, said that witnesses have disputed the account offered by police, but he did not elaborate on what these witnesses said occurred.

Cheryl Mimura, an FBI special agent in St. Louis, said that the bureau was opening an investigation into any potential civil rights violations that may have occurred.

“Just because we’ve opened a case doesn’t meant there is a civil rights violation, it’s to determine whether or not there has been a civil rights violation,” Mimura said on Monday morning.

This investigation will be conducted separately from one being carried out by the St. Louis County police, she said. But the FBI will also continue to monitor the county’s investigation as well.

“The shooting incident in Ferguson, Missouri this weekend deserves a fulsome review,” Attorney General Eric Holder said in a statement. Holder said that the FBI’s investigation “will supplement, rather than supplant,” the local inquiry.

“At every step, we will work with the local investigators, who should be prepared to complete a thorough, fair investigation in their own right,” he said. “Aggressively pursuing investigations such as this is critical for preserving trust between law enforcement and the communities they serve.”

Holder had already instructed attorneys in the Department of Justice’s civil rights division “to monitor developments relating to the shooting incident,” department spokeswoman Dena Iverson said in an e-mail to The Washington Post.