Nagorno-Karabakh: Are Azerbaijani forces digging trenches along line of engagement?

Azerbaijani forces appeared to be digging in along the southern line of engagement in the disputed Nagorno-Karabakh region on Friday.
Footage shows a large excavator reportedly digging trenches in an area that had been seized by Azeri forces last week following fierce fighting with Armenian militants.
A fragile ceasefire is in place in the contested region while both Armenia and Azerbaijan continue to trade allegations as to who set-off the latest round of hostilities that started one week ago. The exact death toll has not been established but it is believed that at least 50 soldiers have died in total, with further civilian casualties also reported.