GENEVA, Sept 4, 2026 (BSS/AFP) - The World Health Organization said Friday that one of its main warehouses in Ukraine had been affected by an overnight air attack -- the third such incident in three months.

The WHO warned that it was part of a wider pattern of attacks on humanitarian facilities in Ukraine.

Overnight, "an air attack in Kyiv Oblast affected one of WHO's main warehouses, storing humanitarian medical needs and supplies," WHO spokesman Christian Lindmeier told reporters in Geneva.

"Access to the site remains restricted due to heavy smoke and safety concerns, while assessments of possible damage and stock losses are ongoing."

No WHO personnel were affected, he added.

"The attacks are part of a broader pattern affecting humanitarian operations across the country," said Lindmeier.

"In 2026, at least 20 attacks have affected warehouses storing humanitarian supplies, including 15 attacks on warehouses holding health-related humanitarian supplies."

The spokesman said that over the past three months, three warehouses used by the WHO in different regions of Ukraine had been damaged by airstrikes, destroying essential medical supplies intended for frontline and hard-to-reach areas.

Two weeks ago, an attack destroyed a humanitarian warehouse in Dnipro, resulting in the loss of half of the medical supplies and equipment intended to support an estimated 225,000 people.

And another warehouse used by WHO in the Kyiv Oblast was damaged during a large-scale wave of attacks on the capital and the wider region in July, the spokesman said.

Lindmeier added that "in my understanding, all warehouses, all UN locations, all WHO locations are deconflicted", meaning that their whereabouts are clearly communicated to all sides in an armed conflict.

The WHO verifies and records attacks on healthcare but does not attribute blame as it is not an investigation agency.

The UN agency has verified more than 3,000 attacks in Ukraine since the beginning of Russia's full-scale invasion in February 2022.

Health facilities and the health system at large fall under the protection of international humanitarian and rights law.