BRUSSELS - Belgian and French media report a second suspect is believed involved in Brussels' subway attack.
Authorities have said that they believed that suspect Khalid El Bakraoui carried out the subway bombing and was killed.
Bakraoui's brother Ibrahim and two other men were seen in surveillance images at the international airport in Brussels, which also was attacked.
The second suspect from the subway bombing was filmed by surveillance cameras and is believed to be alive.
