WATCH - Conor McGregor and Jose Aldo face-off

Aldo and McGregor nearly came to blows in Boston
Aldo and McGregor nearly came to blows in Boston

Ireland's Conor McGregor needed to be restrained as he came face-to-face with his world title rival Jose Aldo in Boston last night - with the duo kept apart as they continued the publicity tour ahead of their world title fight in July.

The publicity tour for the UFC have been catching the attention in recent days, with McGregor's claim that he was going to kill world champion Aldo when they meet in one of the most eagerly anticipated scraps of 2015.

Such is the interest surrounding McGregor's first world title fight that tickets are expected to sell-out quickly when they go on sale tomorrow, with this high profile face-off adding to the hype around the event.

The videos showing the publicity tour featuring Aldo and McGregor are also attracting huge hits on social media sites and you can watch one of them on the link below.