Agri-food and Veterinary Authority of Singapore, the police and the Society for the Prevention of Cruelty to Animals raided Platinium Dogs Club pet boarding facility.
Ghosn, accused of aggravated breach of trust, is facing allegations of making the car maker shoulder 1.85 billion yen ($16.8 million) in personal investment losses.
Hints of progress on a possible U.S.-China trade deal helped bolster sentiment, which has been battered by concerns over a weaker global economic outlook.
New export orders contracted for a seventh straight month on faltering external demand, with the sub-index falling to 46.6 from the previous month's reading of 47.0.