Property tax paid by somebody else

Dear Sir

There is a house in my fathers name who died in 2003.Wecarec7 legal heirs and there is judgement from court that it should be divided into 7 of us.one of my brother has leased it to a family without proper dicuments since 2004.And one of my brother's wife is payingcthe property tax to the corporation in her name since 2014.How could I stip this.?please advise

Yours

RAVI