The rapper said he once belonged to a street gang, but more recently had become a community organiser and activist.
In addition to the new security cam video, The Los Angeles Police Department has issued an arrest warrant for a man named Eric Holder, who they believe may have been responsible or involved with the shooting.
Police said two other people were wounded in the shooting.
Both men have ties to gangs, but their dispute was personal and didn't involve gang activity, police said.
Hussle had planned to meet with Steve Soboroff, the president of the Los Angeles Police Commission, to prevent gang violence in his neighbourhood, Mr Soboroff said.
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The Los Angeles Times reported that the unidentified woman had surrendered to police on Tuesday and Holder was subsequently arrested.
"As opposed to us shooting and getting within violence he would want us to come together he wouldn't want us to act the violence to show the community even more", said Troi Thuercay, a student at Georgia State University. "And that's by turning to each other". We are lost without you babe.
Moore called for people "to bring peace" as people continue to mourn Hussle.
A vigil on Monday night for him outside of his store turned violent and several people injured. Moore said the stampede began when one person displayed a gun, and a second person struggled to disarm the person.
She spoke to the publication by phone before reportedly turning herself in to the Los Angeles Police Department to "clear" her name. One of those critically injured was reportedly hit by a auto.
Candles appear at a makeshift memorial for rapper Nipsey Hussle in the parking lot of his Marathon Clothing store in Los Angeles, Monday, April 1, 2019.