The Kabul attack came amid planned commemorations for the July 2016 Dehmazang square attack which claimed the lives of hundreds of people, many from the so-called Enlightened Movement, a coalition of civil society activities, protesting for Hazara minority rights.
DCO Ahmed further said that 39 people were also injured in the blast.
Bomb blasts by militants are common in Pakistan, especially in tribal areas bordering Afghanistan. Lahore has been the target of terrorist attacks in recent months.
Police officials are now focusing on the people and families who are facing this deadly explosion.
Tehrik-i-Taliban, Pakistan's main branch of the Taliban, asserted responsibility for the attack in an email, saying that one of its soldiers had used an "explosives-laden motorcycle". Pillars of smoke were visible from a considerable distance as ambulances raced to the scene to help victims.
Rescue teams shifted the injured to hospital.
The CM, who is also the brother of PM Nawaz Sharif, was in a meeting at his office when the blast took place.
Lahore has been in the centre of terror attacks. Aiming for police personnel on Monday carries obvious significance in a city trying to self-identify as Pakistan's securest space.
"Chief Minister Punjab @CMShehbaz has strongly condemned the blast in Kot Lakhpat", read another statement. "This needs to be investigated whether this is a terrorist act, or an accident, or if something has exploded", said Chaudhry Nisar Ali Khan, Pakistan's interior minister, at a press conference in Islamabad.
Haider Ashraf told AFP that at least 10 police officers were among the dead. However, the dismembered remains of the suicide attacker had been sent for forensic analysis, the police officer said.