Paris: A thief nicknamed "Spiderman", who snatched five masterpieces from a top Paris museum, was sentenced to eight years in prison on Monday over one of the biggest art heists in recent years.

Vjeran Tomic and two accomplices were also jointly fined a whopping 104 million euros (USD 110 million) over the theft of the paintings by Henri Matisse, Pablo Picasso, Georges Braque, Fernand Leger and Amedeo Modigliani from the Musee d'Art Moderne on the night of May 20, 2010.

The fine corresponds to the estimated value of the artworks, which are still missing.

A lawyer representing the City of Paris, which runs the museum, call their disappearance an "unspeakable" loss to humanity.

Tomic, a 49-year-old seasoned burglar of Croatian origin, admitted robbing the gallery, which is home to more than 8,000 works of 20th-century art.

On his arrest he told police he was asked to steal Leger's "Still Life with Candlestick" from 1922, and never imagined he would be able to grab four more.

The case revealed extraordinary security lapses at the museum in the ritzy 16th district, on the banks of the Seine.

The motion-detection alarms had been out of order for two months when Tomic, who staked out the building for six nights, slipped inside after using acid to dislodge a window pane.

After grabbing the Leger without creating a disturbance he went on a stealing spree, taking Picasso's cubist "Dove with Green Peas" from 1912 -- alone worth an estimated 25 million euros -- Matisse's "Pastoral" from 1905, Braque's "Olive Tree near Estaque" from 1906, and Modigliani's "Woman with a Fan" from 1919.

Three guards on duty failed to spot him. His silhouette popped up only briefly on a security camera.

The paintings were only found to be missing from their frames when the museum reopened the next day.

Jean-Michel Corvez, a 61-year-old antique dealer who admitted to ordering the theft of the Leger on behalf of an unnamed client, and Yonathan Birn, a 40-year-old watchmaker who admitted to hiding the paintings for a time, were given sentences of seven and six years respectively.

On top of their collective fine, the three men were given individual fines of between 150,000 and 200,000 euros each.

Corvez also had his home seized and was banned from dealing in antiques or art for five years.