SAN DIEGO (KGTV) -- One person was burned Friday in what San Diego authorities are calling a hash oil explosion at a City Heights apartment complex.
San Diego Fire-Rescue Department officials said crews responded to reports of what was described as an explosion at around 8 a.m. at an apartment building near the 3700 block of University Avenue.
Crews arrived at the two-story apartment on 3700 Marlborough Avenue to find damage caused by the explosion, but there was no active fire.
At least 24 residents were evacuated from the building, and fire officials said one person was taken to UC San Diego Medical Center for treatment of burn injuries.
Investigators, including a hazmat team, determined the explosion was the result of hash oil, a concentrated cannabis product also known as honey oil.
The American Red Cross was called in to help 24 displaced residents arrange for temporary lodging.
City News Service contributed to this report.