If were unable to log into Twitter, you were not alone. Twitter users nationwide were reporting the social networking site as down on Thursday.

According to Downdetector.com, the outage didn't just affect people in the United States. Users in Europe were are reporting outages.

The outage was first reported around 3 p.m. ET. By 3:45 p.m., the service appeared to be operational again.

There is no word on what caused the outage.