Clark County has launched a website for residents to report illegal fireworks to the authorities.
Complaints can be filed anonymously at ISpyFireworks.com.
County and Metropolitan Police Department officials are asking residents to use the website rather than call the police to help keep emergency lines clear for other calls.
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Police have also said they will blanket the valley this year to help stop the use of illegal fireworks.
Anyone caught possessing or launching illegal fireworks could face $1,000 in fines and additional disposal fees in addition to jail time.