Markets and businesses were closed across much of Pakistan's Punjab province Tuesday in mourning for 13 people killed in a suicide bombing claimed by Taliban faction, police said. Flags at government buildings flew at half-staff, and lawyers boycotted court proceedings a day after the attack in the provincial capital, Lahore, said police officer Nazar Hayat. The bomber targeted police escorting a rally by pharmacists protesting amendments to a law on drug pricing. Official funerals were held Tuesday for seven police, including two senior officers, who were killed in the attack. Nearly 60 people were wounded in the bombing.