Well known con man/cowboy builder/rouge landlord.
Linked to quite a few companies with few aliases.
Lets hope that they wont end there and do him for tax evasion.
Also all people who lost money should sue him.
If you havent been using it for a while you might have got some dust on lens.
Clean with cotton buds soaked in pure alcohol, no water as it might leave some residue. No solvents, they can dissolve your lens
Do your research on rules and regulations first before attempting to do anything.
And contacting your local police never hurts. Even if they don't know they'll be prepared if anyone calls about strange guy with strange equipment.