Egypt's Cairo International Airport has tightened security measures after two bombs were detected next to the arrivals hall alongside the detonation of a domestic explosive device in the capital city.
Reuters reported that security agencies detected bombs using electronic devices, while video footage was being reviewed to try and determine the culprit.
The latest attacks come after Islamic State's Egyptian associate claimed responsibility for attacks in the Sinai Peninsula, killing more than 30 security personnel.
Cairo security chief Khaled Youssef was quoted by state news agency MENA as saying that the device that exploded in central Cairo was a sound bomb and that there were no casualties.
However, a man was killed in a bomb explosion, hours after discovery of bombs at airport, in Egypt's second city of Alexandria.
The Egyptian Government has been under target of Islamist militants, who have carried out several bomb attacks on soldiers and police, since the army ousted President Mohamed Mursi of the Muslim Brotherhood in July 2013.
Cairo Airport is currently undergoing terminal renovations as part of a $500m project, which also includes the construction of a new departure hall and airside pier.
As part of the project, the airside and landside pavements will be upgraded and extended.
Upon the completion of the project, the refurbished terminal will be able to serve approximately 7.5 million passengers a year.