Six civilians were among the wounded, Dawn News reported.
A vehicle carrying 15 policemen was the target, Balochistan government spokesperson Liaquat Shahwani said in a statement.
He said an IED had been fitted into a motorcycle.
Balochistan Chief Minister Jam Kamal Khan condemned the attack, Dawn News reported.
“Terrorist elements want to ruin the province’s peace. [We] will never allow terrorists to succeed in their nefarious plans,” he was quoted as saying by Dawn News.