An influencer has allegedly been murdered by her ex-boyfriend after sharing an online warning about his abuse.

Irene Gu, a 23-year-old content creator from Taiwan, was ambushed as she tried to leave a cinema car park on Tuesday night.

The suspect, identified only by his surname Liu, reportedly blocked her vehicle and began arguing with her before dragging her into a stairwell and slitting her throat.

He is said to have fled across the island to his grandfather's home, where he was arrested by a police task force early on Wednesday morning.

The suspect, identified only by his surname Liu, reportedly blocked her vehicle and began arguing with her before dragging her into a stairwell and slitting her throat.