Key facts
- A teenage girl is in critical condition after an incident involving a loading vehicle in Chalkwell Park, Southend-on-Sea.
- Two teenagers, an 18-year-old man and a 17-year-old boy, have been arrested.
- The arrests were made on suspicion of causing serious injury by dangerous driving.
- Police believe a group had taken unauthorized control of the vehicle prior to the incident.
- Authorities are seeking witnesses and video footage from the scene.
Two teenagers have been arrested after a girl was critically injured in an incident involving a "small articulated loading vehicle" in Chalkwell Park, Southend-on-Sea.