Half a dozen students at a German university had their limbs turn blue and police think someone may have poisoned a campus kitchen

• At least seven students and staff at Darmstadt Technical University in Germany fell ill after using a campus kitchen, police say.
• Several of the students reported having their arms and legs turn blue.
• Police said that one student was briefly in critical condition, but has been stabilized.

German police are investigating a possible poisoning in a case in which several students fell ill and had their limbs turn blue after using a campus kitchen.

At least seven students and staff at Darmstadt Technical University reported feeling nauseated and having their arms turn blue after using a kitchen in the school's Institute for Material Sciences on Monday, $4

Six people were hospitalized in the incident, including one person whose condition was briefly considered life-threatening, police told The Guardian.

The local prosecutor in Darmstadt has "initiated proceedings on the initial suspicion of attempted murder," $4

$4 that investigators found possible poisonous substances in food seized from the Institute for Material Sciences' kitchen.

$4 police said that "milk cartons and water containers" had been mixed with some kind of harmful substance.

Police said that there is no longer a risk for further poisonings.