OTHER VIOLENCE

According to police, these incidents also occurred Tuesday in Pakistan:

— A bomb planted on a motorcycle went off near a place of worship of Shiite Muslims in Peshawar, killing two and wounding 10 others.

— A roadside bomb on the outskirts of Mingora, a main town in the Swat Valley, killed the son of a member of an anti-Taliban militia and wounded the militia member and five others.

— Gunmen fired on a vehicle carrying a Shiite Muslim lawyer and two of his sons, killing them, in an apparent sectarian attack in Pakistan’s largest city, Karachi.

Pakistani authorities suspended a four-day polio vaccination program Tuesday after gunmen shot dead a female polio worker and wounded another, officials said, in a blow to the U.N.-backed campaign aimed at eradicating the crippling disease from this violence-torn country.

Such attacks have made it harder for Pakistan to join the vast majority of nations declared polio-free.

The two women were attacked Tuesday in Kaggawala village on the outskirts of the main northwest city of Peshawar, police officer Mushtaq Khan said.

Senior police official Shafiullah Khan said two attackers on foot fired a pistol at the workers. He said police have started a search operation.

Government official Habibullah Arif said the polio vaccination drive in the northwestern city of Peshawar and nearby villages has been suspended.

The four-day campaign was launched Tuesday morning, but it was halted “for security reasons and to express solidarity with the slain and injured female polio workers,” he said.

No group has claimed responsibility for the latest killing, but some Pakistani militants have alleged in the past that the polio workers are U.S. spies and that the vaccine makes people sterile.

Reinforcing those suspicions was the disclosure that the CIA used a Pakistani doctor to run a hepatitis vaccination campaign to try to get blood samples from al-Qaida founder Osama bin Laden’s family before U.S. commandos killed him there in May 2011.

The World Health Organization, the U.N. agency that oversees much of the polio vaccination work in Pakistan, condemned the attack.

Dr. Nima Saeed Abid, acting WHO country head for Pakistan, said the safety of his polio workers, many of whom are women, was paramount.

“I hope the government will provide them with the requested security for the health workers,” he said. “And after careful assessment, they should resume their activities.”

Pakistani President Asif Ali Zardari blasted what he called a “cowardly” attack, and resolved that “the government will not permit militants to deprive our children of basic health care.” He spoke before the decision to suspend the program.

Pakistan is one of only three countries in the world, along with Afghanistan and Nigeria, where polio is still endemic. Health workers have made strides against the disease in recent years, but the violence threatens to reverse that progress.

In December, gunmen killed nine polio workers in different parts of Pakistan. Several more workers have been killed since then, as well as police who were protecting them.

The U.N. said in March that some 240,000 children had missed vaccinations since July in parts of Pakistan’s tribal belt, the main sanctuary for Islamic militants, because of security concerns.