Paramedics initially called in accident (5)
I believe the answer is:
prang
'accident' is the definition.
(I know that prang is a type of crash)
'paramedics initially called' is the wordplay.
'initially' says to take the initial letters.
'called' becomes 'rang' (called on the phone).
The first letter of 'paramedics' is 'p'.
'p'+'rang'='PRANG'
'in' acts as a link.
(Other definitions for prang that I've seen before include "Possible argument with van" , "nasty collision" , "Crash (slang)" , "Crash (a motor vehicle)" , "Crash involving a car" .)