ET has obtained court documents that demonstrate that Robert Halderman, the man arrested for allegedly attempting to extort $2 million from David Letterman, was required to pay significant monthly child support and alimony payments.

The "48 Hours" producer is required to pay $6,800 per month in alimony and child support to ex-wife Patty Montet, with whom he has two children. In May of 2011, that figure will drop to $5,966.66.

Both Halderman and Montet challenged the amount of the monthly payments in 2007 and 2008 court battles, but a judge ruled both times that the payments were required to stay the same.

The couple divorced in 2004.