They were detained less than half an hour after the explosion.
They are among hundreds of people detained after the attacks.
Many of those detained after the attempt were quickly released.
They've released 573 people that were detained after last June's events.
The man was detained after a court appearance on Wednesday.
He was detained in a little consultation after the Congressional prayer meeting.
The drivers of both vehicles were detained by police in the days after the incident.
At least 30 people were killed, hundreds wounded and more than 1,000 detained during or after the unrest.
He was detained by Pakistani security officials for ten months after his repatriation.
The 16-year-old boy was detained yesterday after a three-day inquiry.
