Police in Tanzania have arrested 65 witchdoctors doctors suspected of involvement in the barbaric ritualistic killings of children in the south-west and northern part of the country.

This follows the murder of at least 10 children in Njombe region and other similar incidents in the northern Simiyu region in late January.

Forty-five witchdoctors from Simiyu, and 20 others from Njombe are being held for interrogation over the spate of heinous killings, Inspector General of Police Simon Sirro told reporters.

The police boss further said the crackdown on traditional doctors, who are the prime suspects in the ritualistic killings, was ongoing.

Superstition is deep-rooted among some communities in Tanzania, who believe human body parts can bring wealth.

Albinos are among those targeted by assailants who kill them or chop off their limbs and private parts. (BBC)