A global ransomware attack has disrupted operations at one of three terminals at India’s largest container port, Jawaharlal Nehru Port (JNPT) in Mumbai, on Wednesday, according to media reports.

The terminal, which is operated by Danish shipping giant AP Moller-Maersk, was under cyber-attack and computer systems were affected, Reuters reported.

Clients were notified that vessel operations at the terminal would be hit and that the company could not say when normal services would resume, according to a shipping industry source.

In a note to global clients, Maersk said: “Access to most ports is not impacted. However, some APM Terminals are affected and gates are closed.”

The port has been trying to clear containers manually, but the terminal’s operational capacity has dropped by two-thirds, said Anil Diggikar, chairman of JNPT, told Reuters on Wednesday.

“This is fallout of global cyber-attack. We are hopeful that operations will normalize in a day,” he said.