Magnetic oil drain plug snapped off

So I bought a magnetic oil drain plug which over time started leaking. I went to tighten it a bit and it just snapped off in the case. Any ideas how to remove it?
Thanks for your help...

Same as any other plug use an extractor, however I fear the magnetic part will drop off into your sump when you drill the hole for the extractor ?....gutted for you as would hate anything floating around in my bike, you maybe able to get it out afterwards with a piece of steel wire and go fishing ?

Is it a steel or aluminium one, and where did it break off, just behind the head? If it is just behind the head you try a long parallel punch about 2.5mm dia. and tap the plug off centre unscrewing it

"tap the plug off centre unscrewing it"

+1 but I'd use a centerpunch.

BuRP wrote:"tap the plug off centre unscrewing it"

+1 but I'd use a centerpunch.

Or failing that a 6mm tap or something similar