A man was arrested after allegedly tossing two homemade bombs into the garden of the U.S. Consulate in the southern Turkish city of Adana on Wednesday, causing minor damage but no injuries, an official said.

A man was arrested after the blast, which damaged a wall surrounding the consulate, Foreign Ministry spokesman Huseyin Dirioz said. The Anatolia news agency said some windows were shattered.

The assailant entered the garden of the consulate building and hurled the bombs before being confronted by security officials, Turkish cable television reported.

Adana police chief Huseyin Capkin said a 35-year-old man was detained after the attack, private NTV and CNN-Turk televisions reported.

One of the bombs exploded when thrown but the second did not and was later detonated by bomb experts, Turkish cable television said. Turkish cable television said the explosives were homemade bombs. Anatolia said they were hand grenades.

Television footage showed no signs of damage to the building.

U.S. Embassy officials confirmed that an attack took place, but had no immediate details.

The motive of the attack was not clear.

Militant leftist, Islamic and Kurdish groups are active in Turkish cities, and leftist groups have carried out attacks against U.S. interests in the past.

The U.S. Consulate in Adana primarily dealt with U.S. military personnel serving at nearby Incirlik air base but many of those troops left during the Iraq war, when the U.S. Air Force ended its patrols from Incirlik over northern Iraq.