Two bomb blasts were reported at a hotel in Egypt's Al Arish city in Sinai on Tuesday where several election judges were staying.
Three people, including a police official, were killed in the explosions, Reuters reported citing Egyptian state media.
According to Al Arabiya, a car bomb exploded near the hotel in Al Arish, which is the capital of the North Sinai governorate and one of the largest cities in the Sinai peninsula that has seen increasing violence and terrorism in recent months.
Voting in the second stage of the parliamentary elections took place in 14 provinces of Egypt to elect members to the 596-seat Parliament.
Egypt is voting to have a parliament for the first time since 2012 when the legislature was dissolved.
Isis presence in Sinai has increased over recent months, with the terror group carrying out several attacks against soldiers, government officials and civilians in the region.
Isis also claimed responsibility for the recent downing of a Russian passenger plane that crashed in the Sinai peninsula on 31 October, killing 224 people.
No group has claimed responsibility yet.