There has been pictures of parts of a wing (right wing, with stall warning sensor as far as I could tell), as well as what looked like parts of the horizontal stabiliser. Both these parts (and probably more) were found in the river some distance from the crash site. There were witness reports saying that some parts came down _minutes_ after the fuselage, which sounded very strange. But a possible explanation could be a parachute got entangled in the tail section or similar, and the (parts of) wing(s) came off due to high g loads in the spin following disintegration.
According to Flightradar24 the plane was at 13.400 feet at the moment of crash, and they were ready to drop.