Pakistani security officials say a suspected U.S. drone attack killed at least three people early Tuesday in the country's northwest.
Officials say two missiles were fired at a compound near Miran Shah, the main town in the North Waziristan tribal region bordering Afghanistan. Taliban and al-Qaida militants are active in the region.
The strike came hours after bombings in two Pakistani cities killed about 50 people and wounded more than 140 others Monday.
Twin bomb explosions in the northeastern city of Lahore, the capital of Punjab province, devastated a busy market crowded with women and children, killing some 40 people.
In Peshawar, the capital of Northwest Frontier Province, a suicide bomber blew himself up as he was stopped by security guards outside a courthouse, killing 10 people.
There have been no claims of responsibility for the attacks.
President Asif Ali Zardari condemned both attacks and said that such violence will not deter the government's resolve to fight terrorism.
The U.S. Embassy in Islamabad called the Peshawar bombing "yet another attack on the democratic institutions of Pakistan and the rule of law."
Militants in Pakistan have killed hundreds of people since the army began a major offensive in the South Waziristan tribal region two months ago.
Some information for this report was provided by AP, AFP and Reuters.