Monday marks six months since the deadly shooting at a Pittsburgh Airbnb on Easter Sunday.Jaiden Brown and Matthew Steffy-Ross, both 17, were shot and killed that night as shots rang out at a party.Others were seriously hurt trying to escape. More than 200 people, many of them juveniles, were at a party at the home when gunfire broke out.Police say the case remains active and open, but no arrests have been made.See a timeline of the investigation below. App users click here.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"It is critical that we come together now to help reduce the violence currently happening while we begin to do the long-term work of ending the culture of violence that is enabling the senseless loss of life we are experiencing today," Mayor Ed Gainey said in a statement last April. "We must say no more and never again.”"We condemn the behavior that is alleged to have prompted this criminal gun violence and the tragic loss of life," Airbnb said. The company has since made its party ban permanent. That ban was still in place at the time of the shooting.