Police are investigating a deliberately lit structure fire in Lutana this afternoon.

Tasmania Police and Tasmania Fire Service were called to the unit in Risdon Road, Lutana about 3:30 this afternoon.

Upon arrival crews observed a small amount of smoke coming from the property, and the fire was brought under control within 20 minutes.

Fire investigators have determined that the fire was deliberately lit, and police investigations are underway.

Anyone with information in relation to the fire or suspicious activity in the area last night or this morning is asked to contact Glenorchy CIB on 131 444 or Crime Stoppers anonymously on 1800 333 000.