Sean Gallup/Getty Images
SCHOENEFELD, GERMANY - JULY 3: Taxis stand in front of the main terminal of Schoenefeld Airport near Berlin on July 3, 2018 in Schoenefeld, Germany. The airport was due to be replaced by the nearby, new Berlin-Brandenburg Airport (BER), though completion of the new airport has been delayed year-after-year by safety and other complications. (Photo by Sean Gallup/Getty Images)
CNN  — 

Various sex toys, including a vibrator, were mistaken for a bomb, causing a partial closure at Berlin’s Schönefeld Airport on Tuesday.

Employees at the airport were conducting routine X-rays of luggage when they spotted “suspicious content in a luggage piece,” according to the federal police in Berlin.

Because it was unclear from the initial scan what the bag contained, an alert was issued shortly before 11 a.m., resulting in the closure of the airport’s D terminal while police investigated the suspicious items.

The owner of the bag was called over the airport speaker system and eventually talked to police about his luggage.

However, he was reluctant to properly explain the contents of the bag – possibly because of embarrassment, according to a federal police spokesperson – saying instead that his luggage contained “technical stuff.”

After an hour-long investigation involving a bomb squad, authorities eventually determined that the items were sex toys.

Science Museum / SSPL
The Science Museum of London has thousands of objects covering more than 3,000 years of medical history. They include sex toys from years past. This hand-held electric vibrator is from 1909. All the items shown here are part of the museum's medical collections. Editor's note: This gallery contains content that some viewers might find objectionable.
Science Museum / SSPL
The "Veedee" vibratory massager had two attachments. It is German and dates to between 1901 and 1930. Massage was considered an effective treatment for combating almost any ailment in the late 1800s, according to the museum's History of Medicine website.
According to the museum website, the "Veedee" vibratory massager claimed to cure colds, digestive complaints and flatulence. It is believed that the name is a pun on the Latin phrase "veni vidi vici" (I came, I saw, I conquered).
Science Museum / SSPL
A Shelton vibrator, dating to the 1910s, and some of its attachments.
Science Museum/SSPL
The "Rampant Rabbit," shown here, was popular during the 1990s.

The airport’s D terminal was reopened at noon.

The incident came on the same day that Frankfurt Airport – Germany’s busiest airport – was evacuated after a family that tested positive for explosives was mistakenly allowed to leave the security area.

The security slip in Frankfurt affected over 7,000 passengers.

Both incidents came during the one of the busiest months for travel in Europe, as many people are on vacation.

In 2016, the latest year with available data, nearly a quarter of the 1.2 billion pleasure trips taken by Europeans occurred in July and August.

CNN’s Kevin Tschierse in Berlin contributed to this report.