Police had said earlier on Monday that they were searching for a ‘dark-skinned or black male’ wearing a dark-colored hooded sweatshirt and a backpack in connection with the twin explosions.
Five minutes before the first explosion, officials said the hooded man attempted to gain entry to a restricted area but was turned away. Authorities say he may be a foreign national, based on his accent.
Other reports suggested one line of inquiry was an individual caught on camera before the attack carrying multiple backpacks into the area 20 minutes before the deadly blasts.
Separately, pictures of a man in handcuffs surrounded by law enforcement officials circulated Twitter on Monday evening. But authorities didn’t identify the man or say whether his arrest was related to the blasts or if it was the ‘Saudi national’.
‘At this time, we haven’t been notified of any arrests or anyone apprehended,’ a police spokesperson said.
It came as police were believed to be looking at whether bombs were planted in trashcans along the route.