Transgender woman killed after using women's bathroom, video appears to show murder

A trans woman has been murdered in Puerto Rico hours after police were called on her for using the female toilets at a McDonald's — and a video of the killing may have been posted on social media.

Neulisa Luciano Ruiz, better known as Alexa, was shot dead on Monday morning as pictures of her being accosted by cops at the fast food restaurant were circulated online.

Police purportedly received reports of someone "peeping" on people using the restrooms; however they found no proof, and the complainant didn't try to press charges after learning Alexa was homeless.

However things took a sinister turn when pictures of the exchange were posted on the internet: within hours she had been shot dead, and police are now investigating if a video being shared on social media captured the moment she was gunned down.

In the unsettling 28-second clip, a number of men in a car can be heard jeering a person dressed similarly to Alexa, as she walks away into the dark and attempts to ignore them.