The Knights Tower where the couple fell to their deaths. The Knights Tower where the couple fell to their deaths.

Making love in the balcony of a sixth-floor apartment isn't really the healthiest thing to do.

Two teenagers died after falling from a sixth-floor balcony during a party in south-east London. The 18-year-old man and 19-year-old woman died on the spot at Knights Tower in Wharf Street, Deptford, around midnight.

A resident who lives across the building told the police that he saw a couple "frolicking" on the balcony. He said, "The occupants were inside, these two were on the balcony. We were shutting our blinds when we saw a couple on their balcony frolicking."

He said they "were trying to have sex on the balcony. The guy was lifting the girl and putting her on the banister."

Soon after that they heard a loud bang and initially thought that someone had been shot. However, later they found that the couple had fallen to their deaths.

Earlier, a Chinese couple had died after the window in which they were having sex gave way plunging them to their deaths.