( CNN ) -- A small plane with four people aboard crashed Monday in a residential neighborhood of Las Vegas , Nevada , a spokesman for the Federal Aviation Administration said . The conditions of the four passengers were not immediately known . The single-engine Piper Cherokee was unable to gain altitude after taking off from Henderson Executive Airport , just south of Las Vegas , FAA spokesman Ian Gregor told CNN . The pilot tried to return to the airport , but crashed on a street in a neighborhood about two miles northwest of Henderson , Gregor said . The plane hit a few cars upon crashing , according to Stacey Welling , a spokeswoman for Clark County . The crash occurred about 8:15 a.m. ( 11:15 a.m . ET ) . The plane is registered to a Louisiana resident , but the identities of those aboard were not released . Investigators from the FAA and National Transportation Safety Board are expected to arrive at the scene later Monday , Gregor said .
Four people were aboard the plane ; their conditions are unknown . The plane was unable to gain altitude after takeoff . The FAA and NTSB are investigating the crash .