There were 23 shell casings and 13 bullet fragments recovered from the lobby of 345 Park Avenue and 24 spent shell casings on the 33rd floor, police said.

New York City is mourning NYPD Officer Didarul Islam and three other people killed in Monday's shooting inside an office building at 345 Park Ave.

The death of NYPD officer Didarul Islam, the first Bangladeshi-born officer killed in the line of duty, has deeply impacted his community in the Bronx. Islam was more than an officer; he was a hero, a living symbol of hope,