• Salah takes tally for season to 30
• Porto suffer heaviest-ever European home defeat
• Liverpool end Porto's 24-match unbeaten run

Porto also started the second half brightly but were again caught when Salah opened them up with a diagonal pass to Firmino whose shot was stopped by Sa, only for Mane to snap up the rebound.

Already facing a record home European defeat, the hosts were sliced apart again in the 69th minute as Mane won the ball, burst forward and released Milner whose low pass into the centre was turned in by Firmino.

Mane completed his hat-trick with another unstoppable effort from outside the area with five minutes left.

"We didn't expect this. There are days when things don't work out the way your expect," said Porto left back Alex Telles.

"We could have scored at the start, we had some chances but we weren't efficient.

"We will try to play a good game at Liverpool. We are not going to hide... we represent a great club and we have to honour the shirt."