Prosecutors say Kelsey Smith was strangled.

Johnson County District Attorney's Office spokesman Brian Burgess said today that some type of ligature was used to strangle Smith after she was abducted from a Target store last Saturday.

He did not specify exactly what was used to kill the 18-year-old Smith, or give details of how or where it happened.

Prosecutors may seek the death penalty for Edwin Hall, the 26-year-old Olathe man charged with first-degree murder and aggravated kidnapping in Smith's death. His bond is set at five million dollars.

District Attorney Phill Kline did not rule out moving the case to federal court. Kline said that he does not necessarily believe Smith was killed in Kansas. Smith's body was found in Missouri.

More than 500 people turned out at a memorial gathering Thursday night to honor slain Overland Park teenager Kelsey Smith.

It was held at Shawnee Mission West High School, where the 18-year-old graduated a few weeks ago. Winds were too strong for the candlelight vigil that was planned.