Photo provided by Google

Cnet.com reports that Google Fiber CEO Gregory McCray has left his post five months after being selected to lead the company’s fiber internet division.

McCray replaced the previous CEO, Craig Barratt, in February.

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The change comes amid questions about whether Google can deliver on its promises of bringing super-fast high speed internet to the wider Atlanta market.

The service is available in some parts of Atlanta, it has yet to reach the wider market. A check of the Fiber website on July 18 for Decatur, Kirkwood and Avondale Estates said “sign-ups are coming” but gives no indication of when the service will be available to residents.

Google Fiber confirmed its expansion to the Atlanta market in January 2015. At the time, company representatives said the build out would take two years.

Since the announcement, hundreds of Google Fiber employees have been reassigned and  the company halted expansion into 10 cities around the country.