* Detonator and clock found in Windhoek
* Air Berlin says object found at airport
* Incident comes after new German security alert
(Adds details from Namibian police and airline)
BERLIN, Nov 18 (Reuters) - Namibian police found a suspect package in Windhoek airport during the loading of a German tourist flight to Munich, German police said on Thursday.
The Windhoek airport operators said police disembarked the 296 passengers and 10 crew from an Air Berlin <AB1.DE> plane and unloaded the luggage and cargo for security checks after they discovered a suspicious parcel at the luggage screening point.
The Namibia Airports Company said in a statement that they "cannot confirm the circumstances around this suspicious parcel" but said the cargo from the Air Berlin flight had remained in Namibia pending a police investigation.
Police in Windhoek would not comment on information given by German federal police that the package contained a detonator, batteries and a running clock.
Namibian police deputy inspector general Vilio Hifindaka said the package was found in routine X-ray screening but he declined to confirm or deny that it contained explosives.
Air Berlin -- Germany's second biggest airline -- made clear that the package was not found on its flight from Windhoek but inside the airport terminal.
The flight arrived at its destination in Germany with a six-hour delay, an Air Berlin spokeswoman said.
"The passengers on the flight, the luggage and the aircraft itself underwent further controls before take off and arrived safely in Munich overnight," said the German police statement.
Germany stepped up security measures on Wednesday after saying it had received intelligence pointing to a planned attack in the country towards the end of this month. [ID:nLDE6AG14Q] (Additional reporting by Servaas van den Bosch in Windhoek and Angelika Gruber in Frankfurt; writing by Dave Graham and Stephen Brown in Berlin; editing by Philippa Fletcher)
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