<p>MOSCOW — An explosion destroyed a café building and injured three people in a Russian city 400 kilometers (248 miles) east of Moscow, emergency officials said. </p>
<p>The blast in Nizhny Novgorod on Friday morning occurred in the annex of a 12-story residential building where the café was located. Three people sustained injuries. </p>
<p>The annex collapsed, and about 100 windows in the residential building shattered as the result of the explosion. </p>
<p>Local authorities evacuated 106 residents from the building, the Interfax news agency reported. </p>
<p>It wasn’t immediately clear what caused the explosion. Media reports initially suggested it was a gas explosion, but local emergency officials said the residential building wasn’t gasified. A chain that owned the café said it didn’t use gas, either. </p>
<p>Authorities have opened a criminal probe. </p>
