A resident in Changsha County, Hunan province, was identified by police through DNA evidence from a discarded cigarette butt after allegedly throwing household rubbish from a high-rise building.
The case came to light after Huangxing Police Station received repeated complaints about objects being thrown from a residential block in Huangxing town. Household waste had reportedly landed on a public pathway below, raising concerns for residents walking through the area.
Police and community officials carried out several checks of the building, but the investigation initially faced difficulties because the residential area did not have dedicated surveillance cameras for detecting high-rise littering. Officers subsequently worked with the residents’ committee to place the building involved under closer surveillance.
Police said CCTV footage from several angles helped them narrow down the floor from which the objects were being thrown. Among the rubbish recovered were cigarette butts, rotten eggs and watermelon rinds.
Police officer Yang Luru said investigators collected evidence from several cigarette butts found among the household waste and sent them for forensic testing. The DNA results eventually allowed officers to identify the suspected offender.
Investigators found that the suspect, identified only by the surname Yang, had allegedly thrown rubbish from the building on multiple occasions. Some of the objects reportedly came close to hitting pedestrians, creating a potential threat to their safety and property.
After being taken in for questioning, Yang admitted to the alleged offences and has since been given an administrative punishment by Changsha County police.
Yang Luru said the suspect told investigators that he had thrown the rubbish from his home because he wanted to save time and believed nobody would notice. He apparently saw it as an easier alternative to taking the rubbish downstairs.
Authorities have since ordered the residential management to address shortcomings and establish longer-term measures to prevent similar incidents.
Police warned that throwing objects from high-rise buildings is far from a harmless act. Even ordinary items such as cigarette butts, tissues, plastic bottles and household rubbish can become dangerous projectiles after falling from considerable heights.
According to police, physical calculations show that an ordinary egg dropped from the 20th floor can generate enough impact force to cause serious injury or even death. Residents were therefore urged to abandon any belief that high-rise littering is merely a minor nuisance and to observe proper safety and legal practices.
Under Article 43(5) of China’s Law on Penalties for Administration of Public Security, which took effect on Jan 1, 2026, throwing objects from buildings or other high places in a manner that poses a danger to personal safety, public or private property, or public safety can result in detention of up to five days or a fine of up to 1,000 yuan. More serious cases can carry detention of between 10 and 15 days, with an additional fine of up to 1,000 yuan.
