To have or to having!?

[blackdragon]

Brannigan, 30, of Castleknock, Dublin pleaded guilty at Dublin District Court  to having green diesel in his car’s fuel tank on January 10, 2011

The meaning of the sentence can be found comprehensive, but i wonder why the writer used "GERUND" after "TO", i.e. "TO HAVING".
could i write "TO HAVE"?
Thank you so much!

[Chicken Sandwich]

NOT A TEACHER

As far as I know, "plead guilty to" can only be followed by either a noun or a gerund.

By the way, could you perhaps use the normal quote feature, instead of that code-thingy? It's a little bit inconventient.

Brannigan, 30, of Castleknock, Dublin pleaded guilty at Dublin District Court to having green diesel in his car’s fuel tank on January 10, 2011.

I’ve been cormless and fuelish | The Sun |Irish Home|Irish Showbiz

Also, I think it's a good idea to credit the source.