Police say seven people were shot at a house party in east Houston that formed after it was posted on Snapchat.

It happened on Mylla Street, near Galena Park and Jacinto City, around 2 a.m. on Saturday. It's unclear what caused the shooting, but a detective on the scene told ABC13 it began as a verbal altercation at the party.

Police say three people were found shot at the home when they arrived. Several people tried to get away from the shooting and took off in a car.

Police say the suspect began following them down the East Freeway and shot inside their car, striking three additional people.

The victims managed to pull over near the East Freeway and McCarty Street to get help