Rsqlite leaves files locked after computer shutdown

I have just started to dabble into the world of sqlite, primarily through R's interface package 'RSQLite'.

However, it seems like putting the computer to sleep while working on the sqlite data base left it locked, and trying to close the connection afterwards does not do anything. Furthermore, as the files is considered in use I'm not able to delete/overwrite the data base (or its -journal file, using Unlocker is not an option as I don't have those rights on the network drive the sqlite base is on).

Any offers on either manually how to force close the connection of the data base, or delete the -journal file successfully?