Amsterdam’s Schiphol airport is to invest €350m in developing a ‘central security hall’, the airport authority said on Friday.

The investment is part of a master plan for the airport, which has been stalled because of negotiations on fees with KLM, the airport’s largest user.

Schiphol also announced a 5.8% rise in revenues last year at €1.3bn. Net profit was on a par with 2011 at under €200m. Half of the profit will go to Schiphol’s shareholders, including national government and the city of Amsterdam.

Although aircraft movements barely rose last year, the airport did process more passengers. Their number rose to over 51 million.

Spending in departure lounge shops rose 7.3% to €17 per departing passenger. The airport authority said the increase is due to renovation work and an upgrade in the quality of shops on offer.