A number of participants, including university lecturers, who took part in a seminar on air pollution on Tuesday expressed concerns over the increase of air pollution in the capital city of Kabul.

At the seminar, named “Investigation of the Environment, Problems and Solutions” held by the Academy of Science, participants said that Kabul city is one of the most polluted cities in the world.

“Air pollution is at the highest level in Kabul city, and it is going to be among the most polluted capitals in the world,” said Asadullah Rezaid, a university lecturer.

However, officials at the National Environmental Protection Agency (NEPA) believe that air pollution has decreased in Kabul in comparison to previous years.

Officials said the department ordered owners to install filters.

"Our figures show that the level of air pollution is less than in previous years," said Sayed Qayom Hashimi, an analyst at the National Environmental Protection Agency.

Meanwhile, Kabul residents said that air pollution has greatly increased in Kabul.

"Unfortunately, we cannot see someone in the early morning or evening because of air pollution, it is really a problem,” said Abdulhai Shokur, a Kabul resident.

Health staff have expressed concerns over the pollution in Kabul, saying pollution causes various illnesses.

"Air pollution creates illnesses, including illnesses of the lungs, and cancer,” said Mohammad Nayeem Akbari, a doctor.

NEPA said that burning coal, plastic and other cheap fuels and as well as the exhaust emissions from old vehicles are the main sources of air pollution in Kabul.