Moscow, Aug. 2 -- At least three people died, and 21 were left injured after a woman carrying an improvised explosive device detonated a bomb near a summer cafe in central Moscow after being stopped by security, according to officials.

According to Russian state news agency TASS, the National Anti-Terrorist Committee (NAC) updated the injury toll to 21 people from an initial report of 15, adding that they were "injured in various degrees of severity."

The blast occurred at approximately 8:10 p.m. local time near house No. 1 on Kudrinskaya Square in the center of the Russian capital, TASS cited the Interior Ministry as saying.

According to the NAC, the explosion was triggered when a security guard intervened to block a suspect carrying ...