A fugitive drug kingpin was nabbed in Lawrence hauling 7 kilos of heroin in his car, according to police, who later scooped up two more kilos of the Class A substance and more than $340,000 cash in his home.

Alexander Dume-Santana, 35, was arrested Thursday afternoon after cops said they noticed him driving recklessly on Willow Street. When they stopped him, they said they discovered 7 kilos of heroin in his vehicle. They later searched his house, where detectives discovered another two kilos of heroin, a 9 mm handgun and $340,000 cash, authorities said.

“This arrest puts a large dent in the drug supply in Lawrence,” police Chief James Fitzpatrick said. “We will continue to work with our law enforcement partners on all facets of the drug problem in this area.”

Dume-Santana was ordered held on $500,000 cash bail, but his bail was revoked on an open cocaine trafficking case out of Lawrence. He was also arraigned as a fugitive from justice on a drug distribution charge out of New Hampshire.

“This defendant poses a clear threat to the safety of the citizens of the greater Lawrence area,” Essex District Attorney Jonathan Blodgett said in a statement. “The fact that he is in default in another trafficking case and is a fugitive from justice shows that he has no regard for the law or the community.”

Dume-Santana was arraigned yesterday in Lawrence District Court on charges including trafficking heroin, reckless driving and giving a false name. His arrest comes on the heels of another major drug bust in Lawrence last month, when Jose C. Casellas, 37, was nabbed while delivering three kilos of heroin to an address in Andover, police said.

Following Casellas’ arrest, Lawrence cops executed a search warrant at a stash house on Woodland Street and found heroin and Fentanyl being bagged for sale, three handguns, drug presses, packaging supplies, cutting agents and other paraphernalia.

Casellas had obliterated his fingerprints in an attempt to hide the fact that he had been twice deported from the United States.

Also last month, Lawrence cops arrested nearly two dozen people in connection with an anti-drug sting aimed at cleaning up the city’s streets.

Police seized assorted bags of heroin and more than $4,000 cash in that sweep.

“Today we sent a message to drug dealers and those who think they can come to our city to purchase narcotics with impunity that we will not tolerate this dangerous and illegal activity,” Fitzpatrick said after the operation.

“We are out there, and we are watching. We will find you. We will arrest you. Lawrence is not a city that will tolerate the proliferation of poisons in and around our community.”

Ariel Rodriguez contributed to this report.