A suspected prankster has been regaling motorists with pro-choice and pro-cannabis messages in Blackrock, Co Dublin today.

An electronic sign of the type normally used to give traffic directions was placed at the side of the Rock Road near Booterstown Avenue and is broadcasting messages to passing motorists.

The sign reads “Against Abortion?”, before changing to “Then Don’t Have One”.

Other messages displayed on the board include "Legalise Abortion" and "Legalise Weed".

The person behind the message is, as yet, unknown.

Do you know who is responsible? Do you agree with them?