6 wounded in an attack on a passenger train in Switzerland

ZURICH (Ina) attacked a man armed with a knife several people in a commuter train, injuring six people, including a child , in the sixth, in northeastern Switzerland. 
A statement to the police , "St. Gallen" area, that three adults and two boys his age and children six years were injured stabbed, burned and wounded the attacker , a Swiss citizen, according to the "SPA". 
he added, that a man aged 27 years was torched in a train wagon with flammable liquid and stabbed passengers while the train was approaching the "Saliz" station on his journey between regions "Ba_es" and "Snwald" in St. Gallen. 
the statement pointed out that the motives of the attacker is not clear yet.