Ambiguity
The dictionary definition of ambiguity is “the fact of something having more than one possible meaning and therefore possibly causing confusion“.
Any sensible person would therefore believe that ambiguity has no place in a newspaper headline.
However, newspapers are not written nowadays by sensible people: or so it would seem.
This is exacerbated by the modern media practice of trying to cram the entire story into the headline in a condensed form, as shown by the screenshot below of this piece from the Daily Post, a title in the Reach plc stable which serves the north of Cymru.

For the benefit of passing illiterate Reach ‘journalists’, an unambiguous version of the headline would read “Prisoner with smiley face tattoo and links to North Wales on run”.
It has since been rumoured that the smiley face tattoo has been recaptured by police. 😉