Sebastian Zapeta, 33, accused of murdering 57-year-old Debrina Kawam by igniting her on a New York City subway, pleaded not guilty and is held without bail. Prosecutors aim for a life sentence without parole. The incident has raised safety concerns in NYC's transit system, which has seen a rise in fears despite a decrease in overall crime. Zapeta, who has a volatile history with alcohol and legal complications regarding his immigration status, told police he has no memory of the incident, expressing remorse afterwards.