Alan Pardew's men continued their pre-season preparations at the Kyocera Stadium, where Shola Ameobi had a goal disallowed for offside.
But the occasion was reportedly marred by racist chanting from some sections of the home crowd.
A Newcastle spokesman confirmed they will be addressing the issue with the Eredivisie outfit but will be doing so privately.
It read: "In relation to alleged racist chants reported during Newcastle United's friendly against Den Haag today, the club will be raising the matter with officials at Den Haag and the issue will be dealt with privately."
adidas has added some color to the Predator line with this new colorway. Released on May 17. Be the first to own a pair.
Borussia Dortmund hears Wembley Calling and are headed to London for the Champions League final.
The push for more color on their cleats, adidas has added the infrared colorway to the adiZero f50 Line.
The Liverpool 2013/14 soccer jersey is available for pre-order. The Reds are eager to compete for silver next season.
Bayern Munich are kings of Germany and hope to be crowned kings of Europe at Wembley later this month!
Chelsea won the Europa League on Wednesday. The Blues defeated Benfica 2-1 on injury time goal from Ivanovic.
One of the top soccer cleats for control the Nike CTR360 will not let you down on the field in tight spaces.
The Juventus jersey for the 2013/14 was released earlier this week. Be the first to wear the colors of the Old Lady.
The new PUMA evoSPEED 1.2 FG. A great new soccer cleat with classic look and first time for PUMA to be on the cleat.
Ajax has released their away soccer jersey for the 2013/14 season. Get in the Gear.