KABUL, Afghanistan — A police official says as many as 14 suicide bombers were involved in attacks Tuesday that killed at least 46 people in relatively peaceful southwestern Afghanistan.

The deputy police chief of Nimroz province says not all the bombers detonated their explosives. Police captured or killed several of them. Abdul Majid Latifa says at least 14 attackers with explosives were involved.

Another official put the number of bombers at 11.

The head of the Nimroz provincial health department, Noor Ahmad Shirzada, says 110 people were wounded in Tuesday’s attacks in different parts of the city of Zaranj.

Taliban insurgents and their allies have been ratcheting up attacks as international troops hand over security to Afghan forces. NATO plans to withdraw most of its troops by the end of 2014.