Police: Teen accidentally kills himself with unsecured gun
Posted: Updated:A 15-year-old boy was killed after he accidentally shot himself while playing with a loaded gun at his friend's home Wednesday night.
The incident occurred inside a home on Williams Street around 8 p.m.
Police say Derek Cosme and two of his friends were inside the house alone when they somehow got their hands on an unsecured handgun.
Nassau police did not comment on who the gun belongs to. Neighbors say there are retired and active members of law enforcement living in the home.
Relatives say the teen's mother just arrived at the home to pick her son up when she saw all the police activity. They say that's how she learned her son was dead.
Relatives describe Cosme as a quiet kid with a tight knit group of friends. He would have been a junior at Glen Cove High School in the fall.
Nassau police say if it's determined that the weapon was not properly secured, the owner's license could be revoked. If a service weapon was involved in the incident, they say that person could lose their job.
Top StoriesMore>>
Shirley man accused of forcibly touching a minor
Shirley man accused of forcibly touching a minor
Edward Quinn, 54, was arrested on Thursday.Edward Quinn, 54, was arrested on Thursday.Police: Pedestrian killed in Ronkonkoma hit-and-run
Police: Pedestrian killed in Ronkonkoma hit-and-run
According to police, Christopher Grassia was struck by a vehicle traveling northbound on Rosevale Avenue, south of Richmond Boulevard.According to police, Christopher Grassia was struck by a vehicle traveling northbound on Rosevale Avenue, south of Richmond Boulevard.Poll: Singles Awareness Day
Poll: Singles Awareness Day
Today is Singles Awareness Day. Are you single and bitter?Today is Singles Awareness Day. Are you single and bitter?Kids Corner Events: Feb 15-22
Kids Corner Events: Feb 15-22
Here are some great events to take your kids this winter break.Here are some great events to take your kids this winter break.Eastline Productions gives back to the community
Eastline Productions gives back to the community
Eastline Gives donates a dollar from every ticket sold at Eastline Productions to a local charity.Eastline Gives donates a dollar from every ticket sold at Eastline Productions to a local charity.Dog Day Fridays for February 15
Dog Day Fridays for February 15
This week's dogs are up for adoption at North Fork Animal Welfare League. The shelter is located in Aquebogue. Their phone number is (631) 369-6189.This week's dogs are up for adoption at North Fork Animal Welfare League. The shelter is located in Aquebogue. Their phone number is (631) 369-6189.The Download: Performer Deluxe from SingSation
The Download: Performer Deluxe from SingSation
The Performer Deluxe from SingSation is an all-in-one karaoke system with speakers and lights.The Performer Deluxe from SingSation is an all-in-one karaoke system with speakers and lights.LIRR union blasts Sen. Kaminsky over Amazon’s departure
LIRR union blasts Sen. Kaminsky over Amazon’s departure
State Sen. Todd Kaminsky, of Long Beach, is one of the lawmakers facing criticism for Amazon’s decision to pull out of a deal that would have brought its second headquarters to Long Island City.State Sen. Todd Kaminsky, of Long Beach, is one of the lawmakers facing criticism for Amazon’s decision to pull out of a deal that would have brought its second headquarters to Long Island City.Trump declares national emergency to build border wall
Trump declares national emergency to support border wall efforts
President Trump made the announcement from the Rose Garden, as he claimed illegal immigration was 'an invasion of our country.'President Trump made the announcement from the Rose Garden, as he claimed illegal immigration was 'an invasion of our country.'New Hyde Park students make lunch for the hungry
New Hyde Park students make lunch for the hungry
Students are New Hyde Park Road School made sandwiches that were brought to the Mary Brennan INN in Hempstead.
Students are New Hyde Park Road School made sandwiches that were brought to the Mary Brennan INN in Hempstead.
SlideshowsGalleriesMore>>
Westminster Kennel Club's annual dog show trots into New York
Westminster Kennel Club's annual dog show trots into New York
Photos from the 143rd Westminster Kennel Club Dog Show at Piers 92/94 in February, 2019 in New York City.Photos from the 143rd Westminster Kennel Club Dog Show at Piers 92/94 in February, 2019 in New York City.Your Long Island Valentine's Day Photos
Your Long Island Valentine's Day Photos
View and share photos of your loved ones on Valentine's Day.View and share photos of your loved ones on Valentine's Day.61st annual Grammy Awards
61st annual Grammy Awards
Photos from the 61st annual Grammy Awards on Sunday, Feb. 10, 2019, at the Staples Center in Los Angeles.Photos from the 61st annual Grammy Awards on Sunday, Feb. 10, 2019, at the Staples Center in Los Angeles.2019 Valentine's Day treats and drinks
2019 Valentine's Day treats and drinks
Here are some of the most popular Valentine's Day treats and drinks for this year.Here are some of the most popular Valentine's Day treats and drinks for this year.Your Kids Corner Photos
Your Kids Corner Photos
Did you do something fun with your kids this weekend? Share your adventure with us!Did you do something fun with your kids this weekend? Share your adventure with us!2019 Jones Beach Summer Concert Lineup
2019 Jones Beach Summer Concert Lineup
Northwell Health at Jones Beach Theater is rolling out a new concert lineup for 2019.
Northwell Health at Jones Beach Theater is rolling out a new concert lineup for 2019.
Valentine's Day Crafts
Valentine's Day Crafts
Anne Caminiti, of Momee Friends Inc, shows Elizabeth and Elisa how to make some fun Valentine's Day crafts using food!
Anne Caminiti, of Momee Friends Inc, shows Elizabeth and Elisa how to make some fun Valentine's Day crafts using food!
Try some of these crafts to make your Valentine's Day extra special and sweet!Try some of these crafts to make your Valentine's Day extra special and sweet!Birthday Smiles
Birthday Smiles
It's a celebration! Is your or a loved one's birthday coming up? Let us know! Send us your photos and you could end up on air and News12.com!
It's a celebration! Is your or a loved one's birthday coming up? Let us know! Send us your photos and you could end up on air and News12.com!
Dog Day Fridays for February 8
Dog Day Fridays for February 8
This week's dogs are up for adoption at Remember Me Rescue NY.This week's dogs are up for adoption at Remember Me Rescue NY.Performers at The Paramount
Performers at The Paramount
Take a look at the performers coming to The Paramount in Huntington.
Take a look at the performers coming to The Paramount in Huntington.