In The Garden: Unable to identify this tree (flowered in spring with fruits now)

Hi,

The attached image shows the tree in my front yard that am unable to identify. This tree has always been a flowering tree every year including this year i.e. it produced flowers during the sprint but now I see green fruits that are turning purple and some dark red. Could anyone please help in identifying this tree?

 

Cydonia oblonga?
http://arnoldia.arboretum.harvard.edu/pdf/articles/1924.pdf

 

I dont think its that..the fruit shape and leaf shape is different than the one you suggested...the fruit on the tree i have looks similar to a prune but not sure

 

An Orchard Plum Prunus domestica. The fruit will be ripe for eating in around 2 weeks to a month from now (give or take a bit depending on weather).

 

Thanks Michael...looks like it definetly is an orchard plum tree. Thanks for your help