The victim sustained scalp injuries, a skull fracture, cuts on his left hand, and a fracture to his left tibia.
Unattended cooking was the likely cause of the fire, SCDF said.
The last time this happened was on 9 May.
The enforcement operations were conducted on 28 Sept and 13 Oct.
A 30-year-old male cyclist is assisting with investigations, the police said.
He struck her on the left cheek after being confronted.
He was promised returns of between 5% and 12% on his investment.
He was released 14 hours after the ransom was paid.
The pigeons tried escaping from the net, but to no avail.
There are many questions about the Income affair that remain unanswered, says a veteran editor.