CAIRO (AP) — Egyptian officials said Tuesday a fire that engulfed a main telecom company building in downtown Cairo a day earlier left four people dead and over two dozen injured.

Four workers were killed and at least 22 others were injured in a fire that broke out on Monday at a key data centre in Cairo, Hossam Abdel Ghaffar, the spokesperson at Egypt’s Health Ministry, told Reuters on Tuesday.

A blaze that broke out in a Cairo central telecommunications exchange disrupted some mobile phone and internet services in Egypt and briefly delayed flights taking off from the North African country.