An explosion near the entrance to the international airport of Yemen's southern port city of Aden on Saturday resulted in at least six deaths and around 20 injured, a senior security source and a medical source told Reuters, but it was not clear whether the incident was an attack.
An airport official said a small truck blew up at an outer gate to the airport, while a local official and two security sources said the vehicle was carrying petroleum products.
The blast was strong and was heard across the city. Nearby residents' windows were smashed.
Aden is the temporary home of Yemen's legitimate government.
Earlier this month a car bomb in Aden targeting a convoy carrying the city's governor killed at least six people and wounded others. The governor survived.
A December 2020 attack on Aden airport killed at least 22 people. An investigation by a team of experts found the Iran-backed Houthi militias responsible for the attack that used missiles.