A stone memorial, surrounded by flowers, has been placed near the site in the French Alps where a Germanwings passenger jet crashed on Tuesday (March 24, 2015). Investigators believe the jet's co-pilot brought it down deliberately. Jeff Pachoud /AFP/Getty Images hide caption

itoggle caption Jeff Pachoud /AFP/Getty Images

Police officers carry boxes outside a house in Montabaur, Germany, on Thursday in connection with the investigation into the Germanwings A320 crash. Fredrik von Erichsen /EPA /Landov hide caption

itoggle caption Fredrik von Erichsen /EPA /Landov

A 16th century woodcut shows the interior of a kitchen. In medieval Europe, cooks combined contrasting flavors and spices in much the same way that Indian cooking still does today. Paul Lacroix/Wikimedia hide caption

itoggle caption Paul Lacroix/Wikimedia

German policemen stand outside a house believed to belong to Andreas Lubitz in Montabaur, Germany, on Thursday. Lubitz, the co-pilot on the Germanwings plane that crashed Tuesday, is suspected of deliberately crashing a the jet into the French Alps. Ralph Orlowski /Reuters /Landov hide caption

itoggle caption Ralph Orlowski /Reuters /Landov

An image from AFP TV video taken Tuesday shows smoke billowing from scattered debris of the Germanwings Airbus A320 at the crash site in the French Alps above the town of Seyne-les-Alpes, France. Denis Bois/AFP/Getty Images hide caption

itoggle caption Denis Bois/AFP/Getty Images