BERGEN COUNTY - Over 100 pounds of heroin is now off New Jersey streets thanks to several large drug busts conducted by the New Jersey State Police.

State troopers, working with several local police departments, seized about 130 pounds of heroin in four major busts in Bergen County. The investigations started in September and lasted through December.

Officials estimate the heroin is about 3 million doses with a street value of $15 million to $30 million.

State Police Capt. Frederick Fife says that the bust is a great step in combating New Jersey’s heroin epidemic.

"The state police has an intense enforcement effort on heroin,” he says. “So many people are dying. I believe about 800 people died of overdose last year."

According to state police, one of the busts led to the largest drug stash found in New Jersey in over a decade. State police received a tip that someone was using a home in Teaneck to transport heroin from Mexico. Nearly 50 pounds of heroin was confiscated.

Two other investigations came to an end on Interstate-80 after troopers spotted cars thought to be moving drugs.

The fourth bust took place in December at the Vince Lombardi Rest Stop.

State police won't confirm whether the four cases are connected because the investigation is ongoing.

Several people were arrested in connection with the busts.