Rescue crews were searching on Thursday for seven people still missing days after an explosion at a fireworks warehouse in Northern California shook a tiny farming community and forced the cancellation of nearby July Fourth celebrations.

No positive identifications have been made, and recovery efforts are still underway, the county said in a statement.

H uman remains have been found at the warehouse filled with fireworks that exploded in Northern California this week, officials said. The number of fatalities was not released and no positive identifications have been made, Yolo County officials said. Seven people were considered missing on Wednesday.

The Boston Pops Fireworks Spectacular is once again celebrating the 4th of July. Here's how to watch live as it airs, with a free live stream!

Those who can't make the fireworks spectacular in person can catch the show on live TV, airing locally on WHDH from 7-10 p.m. and nationally on The CW Network from 9-10 p.m. Contributing: Bailey Allen,