China’s environmental inspectors intensified pollution checks around Beijing as a new round of smog hit the region.

The new round of air pollution will continue in the Beijing-Tianjin-Hebei region between April 3 and 7, with the cities of Tianjin, Tangshan, Langfang, Puyang and Anyang issuing orange alerts, the second highest in the country’s four-tier warning system.

To ensure policies on fighting air pollution, the Ministry of Environmental Protection said on its website that seven teams have been sent to Beijing, Tianjin as well as the cities of Shijiazhuang, Tangshan, Baoding, Xingtai and Anyang in neighboring Hebei and Henan provinces.

Inspectors found several companies in Tianjin and Baoding had failed to meet requirements for cutting pollutants, while some vehicles in Beijing failing to meet emission requirements.

The ministry urged local authorities to address the problem.

China has been under growing pressure to address air pollution as smog frequently smothers the country’s cities.

The government aims to cut the density of inhalable particulate matter in major cities by at least 10 percent by 2017.

A man was caught in southwest China’s Yunnan province carrying drugs from Myanmar to China, according to local police Monday.

The man, surnamed Wang, was driving a red car to Mangshi city last Tuesday morning, when border police stopped him and found him very nervous. After a thorough check, they found 17 lumps of methamphetamine in the car boot. They later seized a further ten lumps from the seat.

The methamphetamine weighed 13.45 kilograms in total. Wang told police that a man in Myanmar asked him to carry it to Kunming, capital of Yunnan, and offered to give him 500,000 yuan (about 72,500 U.S. dollars) after the trip.

The investigation is ongoing.

Mangshi is the capital city of the Dehong Dai and Jingpo Autonomous Prefecture, which is near the opium-producing Golden Triangle. Border police in the prefecture seized 1.6 tonnes of narcotics, completed 668 drug-related investigations and arrested 662 suspects in 2016.