Aahil Khan, drowned in the bucket after he was left unsupervised, police said.
The toddler's mother told police that she was going to bathe both her kids -- Aahil and his three-year-old brother.
She had gone out of the bathroom for a moment and when she returned, she found Aahil had fallen in the bucket, police said.
The toddler might have fallen while trying to stand on his own, taking the support of the bucket, police said.