MIAMI -- Police are searching for a father accused of inflicting a day of torture on his 12-year-old son, repeatedly burning him with an iron.

Detectives said Cedrick Brown was reuniting with his son after Brown spent three years in prison.

The reunion allegedly turned abusive April 12 when, police said, Brown asked his son, "Are you ready for your beating?"

What followed, according to detectives, was a day of torture, with the boy being stripped naked, beaten and whipped, and then burned repeatedly with an iron. Police said Brown also threatened to castrate the boy and bit his fingers and toes several times.

Police said after the abuse, Brown and the boy's grandmother, Annette Brown, kept him home from school and away from doctors, fearing the abuse would be detected.

Annette Brown is in custody on one charge of child neglect.

Cedrick Brown is on the run, wanted on one count of aggravated child abuse, an enhanced charge. If convicted, he could face life in prison.