Bayern Munich sent Arsenal crashing out of the UEFA Champions League last night amid a backdrop of supporter unrest at the Emirates Stadium.

The Gunners took the lead on the night before being reduced to 10 men as the German giants turned the tables on the north Londoners in a stunning second-half blitz.

Bayern took a massive 5-1 lead into the last 16 second leg tie and a section of Arsenal fans vented their frustrations before a ball had even been kicked.

An estimated 200 supporters led a protest march outside the ground calling for the club not to offer a new contract to long-serving manager Arsene Wenger.

However, the gloom was lifted somewhat with a spirited first-half display that saw Theo Walcott bang home the 15thChampions League goal of his career.

It was an historic strike that incredibly sees him overtake Zinedine Zidane and Ronaldo in the European competition’s all-time scoring charts.

But shortly after the restart, with Arsenal perhaps unfortunate not to have bridged the gap further, it all went horribly wrong for the Gunners.

Laurent Koscielny brought down Robert Lewandowski in the area and the referee pointed to the penalty spot.

Elsewhere on the night, Real Madrid defeat Napoli by the same 3-1 scoreline the Spanish giants won the first leg at home to move into the next round of the competition.