Regression tree -details of the terminal nodes

I am making a Tree regression using "classtreereg". My tree has 20 terminal nodes and I named my tree as "t2". How do I get the list of observations or points in each terminal node and save it to individual matrix, may be. I tried

details(t2(node(1)) and t2.node(1) 
didn't really work. Any ideas? I am trying to build another regression model for those observation in each terminal node. Any thoughts on how it can be done.

Thanks