56. Which institution(s) is responsible for examining financial reports and/or investigating violations?

Election Act 2017.

Section 136 (1) of Elections Act, 2017 empowers Election Commission of Pakistan to examine financial reports and investigate violations.

'136. Action relating to election expenses.—(1) The Commission shall, in accordance with such procedure as may be prescribed but within ninety days from the date of submission of a return of election expenses, scrutinize or cause to be scrutinized the return of election expenses submitted by each contesting candidate including the returned candidate.'