Two male gunshot victims died at the hospital. The Allegheny County Medical Examiner’s Office identified them as Jaiden Brown and Mathew Steffy-Ross, both 17.
The blasts, which occurred in rapid succession, were being investigated and more casualties were feared, according to Kabul police spokesman Khalid Zadran and the city's Emergency Hospital. Several of the wounded were in critical condition.
The girl was stabbed several times at about 11am at Stagg High School in Stockton in California's Central Valley and died at a hospital, Stockton Unified School District Superintendent John Ramirez Jr. said at a news conference.
The deaths occurred early on Wednesday when the temple chariot procession was underway in Thanjavur district, 340 kilometres (210 miles) south of Chennai, the state capital, police said.
The Syrian state news agency said the missiles were launched from Tiberias, adding that most of them were shot down by Syrian air defences. An Israeli military spokesperson declined to comment on the reported strike.
A health source said hospitals had received 66 dead bodies and 78 wounded people so far. Emergency Hospital in downtown Kabul said it was treating 21 patients and two were dead on arrival.
Hajj Ahmed, the principal at Al Amal school, said the attack happened at about 11:15am and that one of the students was in the ninth grade. Another was in the seventh grade and two were in the eighth grade.
The country's emergency services were called to the club at 3am (2300 GMT on Saturday) and extinguished the fire before it could spread, citing a statement from the department.
Martin is the brother of Dandre Martin, 26, who was taken into custody on Sunday as a "related suspect" in the case, police said. Dandre Martin was booked on suspicion of assault and illegal possession of a firearm.