His mother at first thought he'd been hurt when a toy exploded.
But police say he'd been hit in the head with a rifle shot fired from across the street.
Jessie died later at a local hospital, and investigators say 20-year-old Matthew Loza and 21-year-old Richard Gomez were arrested, and are being held on a million dollars bail.
A 19-year-old woman was questioned and released.
There is a bank account established by the family in the name of the young victim should anyone like to assist with donation.
The account is held at Chase Bank (Covina branch) located at 1453 N. Azusa Av., Covina. The bank phone number is 626-812-8840. The account number is 000009230570848, under the name of Jessie Valencia.
Anyone with information related to this crime is asked to call the Azusa Police Department at 626-812-3297.