unable to delete .Trash on external drive (Ubuntu 16.04)

I am unable to remove my files from .Trash/ folder on my external hard drive. The file system is NTFS. Files are not in use by any process, therefore might not be locked.

Empty Trash menu entry on the trash icon opens an empty file manager, endlessly loading the list of files.

When launching nautilus with sudo it displays:

This location could not be displayed. 
Sorry, could not display all the contents of "Trash:///": Operation not supported

sudo rm -rf /path/to/.Trash-1000/* results in

cannot access '.Trash-1000/expunged/2836763541/timing': Input/output error
rm: cannot remove '.Trash-1000/expunged/2358660437': Directory not empty
...

What can I do to empty .Trash/ folder on external drive?