Houston blast: 'Felt 20 miles away'; windows broken, residents say

An explosion occurred early on Friday in northwest Houston, Texas, Houston police said in a tweet. The explosion happened at around 4:25 a.m.

ABC's local affiliate KTRK said residents had reported broken windows and doors from the blast and said at least one person had been seen with injuries. It said the blast appeared to have originated at Watson Grinding and Manufacturing, a machining and manufacturing company.

The cause of the Houston blast was not immediately clear.

Houston police have asked people to avoid the area near Gessner and said they were blocking the roads in the area.

A video recorded from a window-mounted camera shows the impact of the blast.

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— Joey Charpentier (@BattleNub19) January 24, 2020

Mike Iscovitz, a meteorologist with the local Fox News channel said the huge blast had shown up on local weather radar and was felt more than 20 miles (32 km) away. "Radar clearly shows this brief FLASH of reflectivity from NW Houston," he tweeted.

Further details about Houston blast are awaited.

This is a developing story.