Boy Killed In San Bernardino School Shooting Had Rare Heart Condition

SAN BERNARDINO (CBSLA.com) — Family and friends are mourning an 8-year-old boy who was killed in the crossfire of an apparent murder-suicide plot that was carried out inside of a classroom at an elementary school in San Bernardino.

FULL COVERAGE: San Bernardino School Shooting | Photos

Family members say Jonathan Martinez - who was struck by gunfire Monday morning as he hid behind his teacher, Karen Elaine Smith, who was the target of her estranged husband, Cedric Anderson - suffered from Williams syndrome, a genetic heart condition.

Anderson fired six rounds, subsequently killing Smith and wounding Martinez and another male student at North Park Elementary School.

Paramedics airlifted the boys to Loma Linda University Medical Center, where Martinez later died.

The other 9-year-old boy remains listed in stable condition. His identity has not been released.

A GoFundMe account has been set up to assist the Martinez family. To donate, click here.

A candlelight vigil for Martinez was set to be held at North Park tonight at 7 p.m.