Harvey Weinstein's retrial was sent into disarray on Tuesday after his accuser gestured towards the disgraced mogul, leading to calls for a mistrial and triggering a medical emergency.

Jessica Mann, 38, had just left the witness stand after describing in detail how Weinstein, 73, allegedly grabbed, forcefully undressed and raped her.

As she passed the defense table she turned towards the seated Hollywood producer and aimed a finger at her eyes and then at him.

The gesture seemed to allude to Mann wanted Weinstein to look at her, and it prompted his lawyer Arthur Aidala to argue for a mistrial.

As his lawyer fought to have the new trial tossed, Weinstein started making gurgling noises and two court officers quickly flanked him. He took a sip of water which seemed to end the sudden episode.