A One Direction "fan" is believed to have been recorded calling Louis Tomlinson with a threat to his baby son, Freddie.
Audio has leaked online, seemingly recorded by Louis himself.
During the brief conversation a female with an American accent says to Tomlinson: "I hope your baby dies."
A shocked Louis says he has recorded the conversation and will be passing the audio onto his lawyers.
She then panics and apologises.
After receiving the threat, a shocked Louis pauses before responding to the caller.
"Did you really just say that?" he asks.
"Because luckily for you I've got you on record here so that's going to go straight to my lawyer and we'll find out who it is."
The female caller responds with "No, no, I'm sorry" before the audio is cut.
