A youth was seen masturbating before he ejaculated on a woman who was sitting at a reading corner at a book shop in Solaris Dutamas, Kuala Lumpur.
The act was captured on closed-circuit television (CCTV) at 2.45pm on July 16.
The youth had walked near the woman before he went into the act using a book to cover his private parts.
He was done in about 15 seconds.
It was then that the woman felt stickly liquid running down her T-shirt and requested to check the CCTV recording with her husband, who is a lawyer.
They lodged a report with the security control room hoping to nab the culprit but to no avail.
The woman's husband said they were still keeping the soiled shirt which could be used as exhibit in court.