Updated

The Latest on an arrest in the shooting deaths of a mother and her 4-year-old daughter (all times local):

1:50 p.m.

Southern California authorities say a 22-year-old man from Tulsa, Oklahoma, has been arrested in the murders of a Long Beach mother and her 4-year-old daughter.

Long Beach Police Chief Robert Luna announced the arrest of Brandon Colbert at a press conference Monday afternoon.

Luna said Colbert was identified as a suspect after being matched to DNA submitted by detectives.

Investigators believe Colbert boarded a Greyhound bus from Tulsa to Los Angeles three days before the shooting on Aug. 6.

Twenty-six-year-old Carina Mancera and her daughter, Jennabel Anaya, were shot to death while walking home from grocery shopping.

No motive has been established and Luna says the investigation remains active.

Colbert has been booked into jail and police plan to present their case to Los Angeles County prosecutors on Tuesday.

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11:55 a.m.

Long Beach police say a suspect has been arrested in the shooting deaths of a mother and her 4-year-old daughter.

Spokeswoman Nancy Pratt says officials will release details at a Monday afternoon press conference.

A $40,000 reward was offered to catch the killer of 26-year-old Carina Mancera and her daughter, Jennabel Anaya.

The mother, daughter and the girl's father had been grocery shopping and were walking home Aug. 6 when a man walked up and opened fire.

It happened less than a half-block from the family's apartment. The girl's father told investigators he did not recognize the man.