Is it disrespectful or unlawful to have dharma tattoo in Sri Lanka?

I read sometime ago that [a woman with a Buddha tattoo was deported from Sri Lanka](https://www.theguardian.com/world/2014/apr/22/sri-lanka-deports-british-tourist-buddha-tattoo) . Is it illegal because it's a Buddha image? Or other symbols like the dharma wheel are not allowed as tattoo as well? What about tattoo images that resemble these symbols (e.g. a meditating person or a circle with eight spikes representing the Noble Eightfold Path)? Thanks