A homicide investigation was launched in Lemon Grove early Thursday after a woman was found lying in the street with fatal injuries.
San Diego County sheriff's deputies found 30-year-old Jennifer Krajnak bleeding from the head near the intersection of Pacific and Olive Streets around 2 a.m.
Krajnak may have suffered several gunshot wounds, officials said.
One shell casing was found on the ground near Krajnak, according to Lt. Glenn Giannantonio. She was rushed to Mercy hospital, where she was pronounced dead.
Deputies said there is no suspect in custody with no suspect description.
Court documents reveal Krajnak filed a restraining order against her boyfriend, a Marine, in October 2010, citing domestic violence. Krajnak claimed he hit, choked and kicked her. Documents show that he said he was defending himself in the mentioned altercation.
She later filed to vacate the order, stating the man didn't pose a danger and was not a violent person.
Officials interviewed the man and do not consider him a suspect. The deputy homicide department is following up on several leads.
The cause of Krajnak's death is expected to be released Friday afternoon.
Anyone with details about the incident is asked to call the homicide unit at 858-974-2321.