A parked camper van exploded in the US city of Nashville, Tennessee, early on Christmas morning, injuring three people and knocking out communications systems across the state.
Possible human remains were later found near the blast site, US media report.
Police believe the powerful blast was caused deliberately.
Officers responding to reports of gunshots just before 06:00 (12:00 GMT) found a camper van broadcasting a warning message to leave the area.
The van exploded a few minutes later.
Some photos showing damage on 2nd Ave North as multiple agencies continue to work and investigate an explosion from earlier this morning. pic.twitter.com/0cWA3oUCDl
— Nashville Fire Dept (@NashvilleFD) December 25, 2020
Source: BBC News
Related news: Photos: Nashville explosion investigation