The Election Commission of Pakistan (ECP) can declare an election void under which section?

The Election Commission of Pakistan (ECP) can declare an election void under which section?

الیکشن کمیشن آف پاکستان کس سیکشن کے تحت انتخابات کو کالعدم قرار دے سکتا ہے؟
Explanation

 Section 90 of the Election Act empowers the ECP to declare an election void 

If there are substantial irregularities or violations of the election laws