Two Brazilian-owned Boeing 737 jetliners collided Saturday on the runway of Sao Paulo's Guarulhos airport, damaging both aircraft and injuring six people, witnesses and news reports said.

There was no official confirmation of the incident.Witnesses said a Transbrasil airlines Boeing 737 carrying 119 people was taxiing down the runway for a flight to Foz de Iguacu when it collided with a Viacao de Sao Paulo Boeing 737 incoming from Brasilia.

The left wing and rear windows of the VASP plane were partially destroyed by the collision that also caused severe damage to the Transbrasil jet's right wing.

Witnesses and news reports said six of the 76 people on the VASP plane were injured, but the extent of the injuries was not known. A Transbrasil spokesman said none of its passengers or crew was injured.