The victims were struck by a 2005 black Nissan Titan XE truck making a left turn onto the southbound side of 100th Street from 31st Avenue around 4:15 p.m.
Police say the 52-year-old driver accelerated too quickly when making the turn, and struck the two children who were crossing at the intersection with a woman.
The 8-year-old was pronounced dead at the scene. His 10-year-old brother was taken to NewYork-Presbyterian Queens Hospital in stable condition.
It's not clear if the woman they were walking with was their mother.
The 52-year-old driver was taken into custody. Charges against him are pending.
The investigation is ongoing.
State Senator Jessica Ramos, whose district includes East Elmhurst, posted on X following the deadly crash, saying "pedestrian safety" for this budget "just became that much more personal."
----------
* More Queens news
* Send us a news tip
* Download the abc7NY app for breaking news alerts
* Follow us on YouTube