Pop star Nick Jonas has reached out to fans online to assure them he is safe after landing at the Los Angeles International Airport (LAX) terminal where a shooting broke out on Friday (01Nov13). A gunman opened fire on a Transport Security Administration (TSA) official at a Terminal 3 checkpoint at around 9.30am local time, prompting police to evacuate the building and its surrounding areas. Authorities claim the suspect, who has since been identified as 23-year-old Paul Anthony Ciancia, used a rifle to kill one employee before engaging in a shoot out with airport cops, injuring at least seven others. Earlier, unconfirmed reports suggested Ciancia had been killed, while sources now tell the Los Angeles Times that he is in custody and in critical condition. All flights in and out of LAX were grounded as a result, and actor James Franco took to his Twitter.com page to reveal that his plane was among those affected. Now Jonas has told fans of his experiences on Twitter after arriving at the LAX terminal which has been temporarily shut down. He tweeted, "Landed at LAX... to the news that there was a shooting in the terminal my plane was supposed to deplane at... Currently waiting on the plane in a remote parking area. I am safe. Praying for the victims of this shooting." Meanwhile, Glee star Mark Salling has been forced to scrap plans to spend the weekend (01-03Nov13) in Dallas, Texas after his flight out of Los Angeles was axed. He writes on Twitter, "Otw (on the way) to lax and I hear there was a shooting at the terminal I'm going to. No Dallas for me this weekend, hope everyone is ok. I hate u (sic) LAX". A host of celebrities, including Salling's Glee co-star Amber Riley, Alyssa Milano, Kelly Osbourne and Josh Groban, have expressed their shock and horror online, while Billy Ray Cyrus tweets, "Thoughts and prayers for all the victims and those affected by the shooting at LAX today."