A protest by migrants detained at a facility northeast of Athens because they entered the country illegally has ended and the detainees have returned to their rooms, police said Sunday, according to AP. Officers on motorbikes continued to comb the surrounding area for escapees but there were no signs of a breach at the detention center itself, according to a police announcement. There are about 1,700 migrants at the facility. The protest started when some detainees attacked guards at nightfall Saturday as dinner was being served. According to police, the attack on the guards was unprovoked. The detainees also set fire to their bedding and some of the containers that housed them. Police said at least 10 prison guards were injured, none of them seriously. It was not clear if any detainees were injured.