Emergency services raced Sunday to the scene of a small plane crash at London Southend Airport.

No details on where the plane was heading or how many people were on board were immediately disclosed.

In a statement on social media, the airport confirmed a “serious incident” involving what it termed a general aviation aircraft.

It later said that all flights to and from the airport have been cancelled until further notice, while police, emergency services and air investigators assess the incident.

British media said it was a medical transport jet equipped with medical systems for transporting patients, specifically a Beechcraft B200 Super King Air heading to the Netherlands.