Baby Nicholas's death is a warning to Ireland of fentanyl's deadly spread

The drug is so powerful, that even a few sugar granules worth of it can kill an adult

The fentanyl that killed one-year-old Nicholas Dominici was hidden in the nap room under a mat as he slept, police say.

Baby Nicholas Dominici was put down for his usual afternoon nap in childcare with his nursery friends. He never woke up.

The one-year-old died of a drug overdose.