FILE PHOTO: One of the offices of Collins Aerospace is shown in Chula Vista, California, U.S., June 10, 2019. REUTERS/Mike Blake/File Photo

(Reuters) -RTX subsidiary Collins Aerospace is working on restoring its onsite passenger processing software for airlines after a cyber "intrusion" disrupted operations, the company said on Wednesday.

Charlotte, North Carolina-based Collins Aerospace experienced a disruption on September 19 to its MUSE system, an airport platform that supports passenger check-in, baggage processing and boarding operations at several European airports.

The ransomware attack knocked check-in systems offline and caused widespread travel disruptions. British police said on Wednesday they had arrested a man as part of their investigation into the incident.

Berlin airport, one of the affected sites, said it was struggling to restore its check-in and baggage handling systems, warning of further delays and cancellations on Wednesday.

The attack on Collins Aerospace is the latest in a series of cyber incidents in Europe with significant offline consequences.

(Reporting by Aishwarya Jain in Bengaluru; Editing by Mohammed Safi Shamsi)