A 17-year-old was killed and three other people were injured in separate shootings in Wilmington, Delaware, on Labor Day, police said. 

Police said the 17-year-old was shot on the 1200 block of Sycamore Street at around 1:20 p.m. He was taken to the hospital in critical condition and died due to his injuries, according to police. 

Another shooting happened just before noon on the 200 block of South Harrison Street, which is roughly a half mile from the 1200 block of Sycamore Street.

Police said an 18-year-old man and a 24-year-old man were both found with gunshot wounds on the 200 block of South Harrison Street. They were each placed in stable condition at the hospital, according to police. 

At around 7:15 p.m., a 41-year-old woman was shot on the 1200 block of Lancaster Avenue, police said. She was taken to the hospital and placed in stable condition.

So far, no arrests have been made. 

The shootings are under investigation by the Wilmington Police Department.