Homicide Detective John Skaggs said that a motive is still unknown though they say the shooter targeted Melvin and no one else

Homicide detectives searched for clues on Monday to the shocking shotgun slaying of a Hollywood production assistant ambushed while walking along a street in the heart of Hollywood.

The woman, Carrie Jean Melvin, 30, was killed on Sunday night when a gunman crept up behind her and shot her in the head as she was strolling with her boyfriend near Sunset Boulevard, police and coroner's officials said.

The suspect then made his getaway in a black sedan and was still at large as of Monday, according to police.

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Mysterious slaying: Carrie Jean Melvin, 30, was killed on Sunday night when a gunman crept up behind her and shot her in the head as she was strolling with her boyfriend near Sunset Boulevard

Dead: Melvin is taken by medical personnel on a stretcher after being shot to death by an unidentified shooter. Police do not know whether the attack was random or is Melvin was targeted nor they do they have a motive

Hollywood girl: Carrie Jean Melvin was a Hollywood production assistant who recently became CEO of a branding and social media company. Police say they don't believe she had any enemies

The suspect is described as a black man in his mid-20s, about 6 feet tall, and wearing a dark hooded jacket.

An LAPD spokeswoman, officer Sara Faden, said the motive for the shooting remained a mystery, with no immediate evidence of whether the killing was a random act of violence or a targeted attack. Police say the shooter targeted Melvin and not her boyfriend but they don't currently know why.

'We just don’t know,' Homicide Detective Skaggs told the LA Times.

'On one hand, she didn’t have any known enemies. On the other hand, it looks like it was directed toward her. … We’re looking at all angles.'

Police Commander Andrew Smith told the Los Angeles Times that investigators were not aware of any similar shootings, leading them to believe it was 'an isolated incident.'

Was the shooting random? Police say Melvin, pictured with friends, currently has no known enemies. While some evidence suggests that the shooting was random, police say Melvin may have been targeted since no one else was harmed and no one was robbed

'On one hand, she didn’t have any known enemies. On the other hand, it looks like it was directed toward her. … We’re looking at all angles,' Homicide Detective John Skaggs said of the tragic shooting

Populated area: The shooting along Sunset Boulevard appears to have been an 'isolated incident' that skaggs said was particularly 'alarming because of the nature of the violence'

Skaggs said the shooting was , 'alarming because of the nature of the violence.'

Skaggs said Melvin and her boyfriend had left their apartment to get food when the gunman approached them and opened fire. Melvin was shot not far from where she lived.

According to Melvin's Facebook page she studied Film and Media Production at the University of Santa Cruz .

Melvin's LinkedIn says she worked as a production assistant for Frederic Golchan Productions from August 2013 to August 2015.

Bizarre event: Friends and family of Melvin struggle with questions about the shooting and why someone chose to kill their friend in what may have been a random or targeted attack

Playful: Melvin poses inside of a pizza shop with her purse designed to look like a rubber chicken. Sadly Melvin will laugh no more as friends and family mourn her death and police desperately search for her kller

She was most recently employed as CEO at Web to World Media, a branding and social media company where she worked for two months.

Melvin also tended bar at Haven Gastropub Brewery in Pasadena and Steingarten in West L.A.

The Times reported eight people have been killed during the past 12 months within a mile of Sunday's shooting, which occurred three blocks from the intersection of Highland Avenue and Hollywood Boulevard, near Grauman's Chinese Theatre, the Hollywood Walk of Fame and the Dolby Theatre complex where the Oscars are held each year.