★Historically significant

1955 CIA-collected intelligence report sourced from private correspondence inside Communist Hungary, representing one of the earliest Cold War-era CIA filings on UAP activity over Soviet-bloc territory, with a hand-drawn formation sketch included as supporting material.

CIA-UAP-018, Report of Unusual Flying Object Sightings and Attendant Scientific Activity

CIAPDFIncident ReportCONFIDENTIALLight redactionPURSUE Release 3

3/10

niche or mildly interesting

UAP Insight significance score

Location: Hungary
Incident date: 1955
Duration: several weeks
Witnesses: Single witness
Released: June 12, 2026

UAP Characteristics

◉ DiscHypersonic speed

Evidence Types

Testimony

Official Conclusion

Unevaluated — no conclusion stated

Official Description

A 1955 report on a UFO sighting in Hungary. The information came from a letter between Hungarian relatives, living in the USA and Budapest. A more redacted version of the report has been available on CIA's public website.

Key Findings

→A letter from Budapest in November 1955 described 'flying saucers' keeping the Hungarian population in a nervous state for several weeks and occupying scientific groups.
→The objects were estimated to be traveling at 12,000 kilometers per hour (approximately 7,456 mph), described as 'fast-rushing heavenly phenomena.'
→A hand-drawn sketch included with the letter depicted a formation of multiple round objects with a suspected course between Budapest and Moscow.
→The CIA source characterized the information as 'unevaluated' and the report is explicitly labeled 'THIS IS UNEVALUATED INFORMATION.'
→This is a third-hand civilian account: a US-based source relaying a personal letter from a relative in Budapest, with no direct observation by any trained or credentialed witness.

UAP Insight Analysis— AI generated, not official

This is a CIA Information Report (No. 00-B-93674) dated April 17, 1956, prepared and disseminated by the Central Intelligence Agency, based on a personal letter received in November 1955 from a niece living in Budapest, Hungary. The source is a naturalized US citizen of Hungarian extraction who corresponds regularly with relatives in Budapest. The report relays secondhand civilian accounts of 'flying saucer' sightings over Hungary, with an estimated speed of 12,000 kilometers per hour and a hand-drawn sketch showing a formation of disc-like objects on a trajectory between Budapest and Moscow.

Analyst Notes

This is an entirely third-hand civilian account: a US-based naturalized citizen relaying a personal letter from a relative in Budapest. No direct observation by any witness is documented. The report is explicitly labeled 'unevaluated information.' No sensor data, no trained observer, no official corroboration. The objects are colloquially referred to as 'so-called saucers' suggesting popular cultural framing rather than confirmed phenomena. Speed estimate (12,000 km/hr) originates from an unnamed newspaper source cited in the letter. The sketch is a rough hand-drawn diagram, not a technical rendering. Page 3 is blank.

Extracted Entities

Agencies & Organizations

Central Intelligence Agency (CIA)

Locations

HungaryBudapestMoscow

Aircraft & Objects

So-called flying saucers (rockets) in formation, estimated speed 12,000 km/hrMultiple round objects depicted in hand-drawn sketch traveling between Budapest and Moscow

Dates

November 195517 April (year implied 1956, distribution date)20 December through 17 January (school vacation mentioned in letter)

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AI analysis by claude-sonnet-4-6 · July 20, 2026