Update 2:44 p.m.: Dokins' sentencing has been postponed until June.
6:00 a.m.: Donald Dokins faces 90 years-to-life in prison for killing Angel Cortez in Watts. The baby was shot June 4, 2012 while sleeping in his father's arms.
The dad, Mauro Cortez, was also hit by the bullet, but survived with minor injuries.
Dokins rode up on his bike, opened fire and rode off, according to testimony at the trial. Dokins, then 15, may have mistaken Mauro Cortez for a rival gang member. Police arrested Dokins three weeks later.
Last month, a jury deliberated only an hour and a half before convicting the teen of murder and attempted murder, along with gang enhancements. Dokins will spend at least the first two years of his sentence in the Division of Juvenile Justice. When he turns 18, the state will have the option of moving him to an adult prison.
During trial, Deputy District Attorney Danette Gomez told jurors that Angel Cortez was a miracle baby for his family. His mother, Liliana Nava, has a medical condition that makes it difficult for her to conceive. The prosecutor said Angel's parents have been devastated by his death. They're expected to testify during Tuesday's hearing.
Sentencing is scheduled for 8:30am Tuesday in the Compton courthouse.