Boris Smiljanic opened the scoring in the first half before one from Felipe Caicedo and two from Ivan Rakitic put Basle 4-0 ahead in the second half.

Substitute Juho Makela's late goal for Thun was but a footnote to the game.

Basle move within five points of leaders and champions FC Zurich who were lucky to escape with a 0-0 draw with third-placed St Gallen after Hannu Tihinen was sent off.

FC Sion grabbed a 1-1 draw with Aarau through Alvaro Saborio after Goran Antic had opened the scoring for the visitors.