At least 20 people were hospitalized Saturday, including two in critical condition, after a gas explosion shattered parts of a shopping mall in the South Florida city of Plantation, authorities said. Firefighters were searching for other injured people but believe all have been taken for treatment, said Plantation Fire Department deputy chief Joel Gordon. News footage and social media video showed firefighters arriving at the mall. Windows were blown out of an LA Fitness. A section of the complex appeared to sustain significant damage, with shattered windows and scattered debris.