The large fireworks explosion that sent two people to the hospital and covered a Cape Cod golf course with debris on Wednesday was caused when the ignition accidentally became lit, fire officials said Friday.

The Massachusetts Department of Fire Services issued an update Friday on the ongoing investigation into the fireworks explosion that happened earlier this week in Mashpee. The incident happened Wednesday at the New Seabury Country Club and sent two people to the hospital.

Eight people were injured in an explosion at New Seabury Country Club while setting up for the annual Fourth of July fireworks. Here's what we know.