For the second time in six months a homemade bomb has exploded in front of an Argentine office of Chile's LAN airlines, which is part-owned by Chilean President-elect Sebastian Pinera.

The airline is saying in a statement the blast in the southern Argentine province of Neuquen damaged the front door of a sales office but caused no injuries.

State news agency Telam is reporting that a group called the Jacinto Arauz Internationalist Insurrection Rebel Brigade claimed responsibility for Wednesday's attack.

A note found at the scene said the group decided to attack the airline because it was a symbol of exploitation.

The previous attack took place Aug. 4 at a LAN office in downtown Buenos Aires.