Police cordoned off an area behind Three Bridges Free Church, in Three Bridges Road, as part of a murder investigation.
A spokesperson for Sussex Police said the area was being searched today (Monday January 20) after the death of a man who was attacked in an alleyway off Haslett Avenue East yesterday (January 19).
Three men aged 23, 33 and 48 and a woman aged 22, all from Crawley, were arrested yesterday on suspicion of murder.
All four are in custody and being questioned.