Officers seized the food and found unsatisfactory hygiene conditions in parts of the restaurant, while warning that an online video could not establish when or how the suspected mouse entered the meal.
Hu Shu-ling alleged that Kwok Ka-wo promised to hand over government and private disaster assistance as a property down payment, but the court found she could not establish the agreement or prove the funds had been raised in his name.
He was released on bail pending further investigation, while a self-formed concern group has asked the school to report to teachers and students by 13 September.
At least one police officer was injured after the private car was stopped over a suspected traffic offence in the Yau Ma Tei and Mong Kok area on Monday afternoon.