PESHAWAR, Pakistan (Reuters) - Two men on a motorcycle threw a grenade at a Christian missionary hospital in northwest Pakistan on Friday but no one was hurt, witnesses said.
There was a separate attack in eastern Pakistan, where gunmen fired on a girls' school in Lahore, injuring one student.
The school was owned by a local politician running in next week's parliamentary elections, but police said it was unclear if the attack was politically motivated.
In the northwestern town of Bannu, police said both men escaped after the grenade attack on the hospital, and also labeled the act "ineffective."
There have been at least five major attacks on Christian targets in Pakistan in the past year, including the massacre of seven Christian charity workers in the southern city of Karachi last week.
The attacks have been blamed on Islamic militants angered by Pakistan's support for U.S. military action in neighboring Afghanistan. Bannu lies close to Pakistan's lawless tribal regions bordering Afghanistan, where many people sympathize with that country's former Taliban regime.
Police also said three policemen were arrested near the capital Islamabad on Friday and accused of smuggling a large consignment of arms, including 10 rockets, a launcher, 10 hand grenades and a Kalashnikov assault rifle.
They said the men were trying to take the weapons from Peshawar in northwest Pakistan -- where weapons are in plentiful supply -- across the country to Lahore.