A year after a mall fire killed 19 people - mostly toddlers at an unlicensed child care center - Martin Weekes is no closer to understanding why his triplets perished.

"The phrase we tend to use is that we are deafened by silence - the silence in our house because we had a really busy house with three 2-year-olds," Weekes said. "Similarly, we have been deafened by the silence by the authorities in Qatar who just failed to communicate or show any interest."

Qatari officials have not responded to CNN's requests for comment on the fire at the Villaggio shopping mall in Doha, which killed 13 toddlers, four nursery staff and two firefighters. The owners of the child care center are Qatar's ambassador to Belgium and his wife.