The striker is a free agent after leaving Premier League side Swansea City, and will aim to impress Town boss Mick McCarthy at the Amlin Stadium.
Lita made a big impact during his time on loan at Norwich back in 2008, scoring 7 goals in 16 appearances.
More top news
A coroner has criticised the Luton and Dunstable Hospital after the death of a 10-month-old boy from a rare bowel condition.
A book of condolence has been set up in Luton to give people a chance to pay their respects to victims of the Westminster terror attack.
A sheep farmer from Suffolk is pleading with dog owners to keep their animals under control after several attacks on her flocks.