WATCH: Explosion in London injures 30 at Jewish holiday celebration

Thirty people were hurt in an explosion in London as a mobile phone sparked a fire during a Lag B’Omer celebration. It is customary to light bonfires on the Lag B’Omer holiday, which commemorates the passing of 2nd-century sage Rabbi Shimon Bar Yochai.

Lag b'Omershimon bar yochai