(CNN) -- At least 13 people were killed in a suicide bombing Friday morning in Afghanistan's western Farah province, police said.
Among the dead was one policeman. The attack injured 29 others, including eight children, police said.
The suicide bomber self-detonated next to the governor's house in the capital, Farah city. Police have reason to think the bomber was Pakistani, said Mohammed Faqeer Asker, chief of police in Farah.
The largely desert province bordering Iran has seen an increase in bloodshed as Taliban insurgents have spread west from their strongholds in the south and east of Afghanistan.
The attack occurred a day after Afghan President Hamid Karzai was sworn in for a second five-year term.