Authorities in Portugal have released the pair but banned them from leaving the country after warning them they could face up to ten years in prison if found guilty of a charge of aggravated abandonment of a child.
The unnamed Chinese couple, thought to be in their late thirties, had been given permission to settle in Portugal under its Golden Visa scheme because they had invested more than half a million euros in property.
The luxury condominium where the tragedy occurred is in Parque Das Nacoes, one of Lisbon”s most exclusive addresses.
A spokesman for prosecutors in Lisbon confirmed: “A criminal inquiry is underway to clarify the circumstances in which a five-year-old girl died following a fall from the 21st floor of a building in Parque das Nacoes in Lisbon.”
A judicial source said the bail conditions, which include the ban on leaving Portugal and an order to sign on at a court every week, would remain in place for at least three months.
Stunning Brazilian model Jeniffer Viturino, 17, fell to her death from a 15th floor apartment in the same block in 2011..
Her family claimed at the time she may have been pushed to her death but prosecutors shelved their investigation after failing to find any evidence of a crime.
The Golden Visa Programme launched by the Portuguese authorities is a fast track for foreign investors from non-EU countries to obtain a fully valid residency permit in the country.
The conditions for those wishing to qualify including buying property above half a million euros, creating a minimum of 10 jobs of transferring funds above one million euros.
Some have dubbed the visa the EU residency permit because it allows grantees access to the Schengen zone.
The scheme, introduced in 2012, was suspended briefly last July following a corruption scandal.