The family of a man killed by an Atlanta police officer last week held a news conference Monday morning, demanding answers from authorities for the circumstances surrounding the shooting.

Twenty-four-year-old Deaundre Phillips was shot and killed at the Atlanta Public Safety Annex in the 3400 block of Donald Lee Hollowell Parkway in northwest Atlanta last Thursday evening.

Several investigators arrived at the annex building to complete paperwork when they discovered what police called a "suspicious person in a car."

According to investigators, the car has the aroma of marijuana wafting from it. When officers tried to apprehend Phillips, he tried to drive away.

PHOTOS | Official investigate deadly officer-involved shooting

As an officer tried to enter the car on the passenger's side, Phillips tried to drive away with the officer half in and half out of the car. The officer shot and killed Phillips.

Police said Phillips, the father of a 5-year-old, was a known gang member. Investigators said he was affiliated with the Crips street gang.

Both allegations were strongly denied by a lawyer for Phillips' family.

RAW VIDEO | Family demands explanation from APD

Friends and relatives gathered outside the Public Safety Annex facility Friday afternoon in protest of the shooting death of Phillips, many of them yelling profanities and blocking traffic on Hollowell Parkway, but no one was arrested.

Photos | Protests outside of the Atlanta Public Safety annex

The officers involved in the incident have not yet been identified by Atlanta Police. The Georgia Bureau of Investigation is looking to the exact sequence of events surrounding the incident.

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