LAHORE, Pakistan (AP) — 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 a breakaway 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.

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The attack was claimed by Jamaat-ul-Ahrar, which said it was revenge for Pakistani military operations against militants in tribal regions near the Afghan border.

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