Google shares were marginally down Wednesday morning on the Nasdaq.

Brussels - Internet search giant Google says it is investing 300-million euros to expand its continental European data centre.

Google said on Wednesday it will upgrade the facility in Belgium to meet growing demand for its online services.

The information underpinning Google's services - Internet search requests, Gmail or YouTube - is processed in industrial-scale data centres such as the Belgian plant in St. Ghislain southwest of Brussels.

Google says the centre currently has some 120 employees and is one of the most energy-efficient facilities of its kind.

The company, based in Mountain View, California operates other data centres catering for the European market in Ireland and Finland. - Sapa-AP