SANFORD, Fla. -

Graphic pictures of Trayvon Martin's body were shown to jurors on Tuesday in the second-degree murder trial for former neighborhood watchman George Zimmerman, who is charged with shooting and killing 17-year-old Martin.

[Chat recap with Tony Pipitone from the courtroom]

Prosecutors showed pictures of Martin's body at the crime scene as Martin's father, Tracy, left the courtroom. Martin's mother, Sybrina Fulton, looked away as pictures were shown of Martin's body lying face up in the grass and eventually left the courtroom. The jury had no visible reaction.

[Pics: Warning, content may be graphic]

The state showed the pictures from the night of the Feb. 2012 shooting during questioning their fourth witness-- Sanford Police Sgt. Anthony Raimondo Jr.

Raimondo responded to the shooting scene and found Martin face down with his hands underneath his body.

"Mr. Martin was lying face down with his head oriented generally towards the north and his hands underneath his body, sir," Raimondo said.

Raimondo said he attempted CPR with safety mask due to the extraordinary circumstance and attempted to seal Martin's bullet wound with a plastic bag. He described hearing bubbling sounds from Martin's chest moments after the shooting.

Martin was pronounced dead a short time later.

In cross-examination, Zimmerman attorney and former Local 6 legal analyst Mark O'Mara showed the pictures again and asked how long Martin's body was exposed to the rain before it was covered up. Raimondo estimated about 15 minutes.

The defense has suggested rain water may have washed blood evidence off Martin's hands before police covered his body. Raimondo described the weather as "drizzling."

Following Raimondo's testimony, the state called Sanford Police Department crime scene technician Diane Smith.

State attorney John Guy questioned Smith about the conditions of the crime scene and the types of photographs she took at the scene.

Smith got up from the witness stand and showed jurors on a large poster board where items were found at the crime scene with evidence markers. Pictures from the crime scene were shown correlating to the markers on the board.

Fulton returned to the courtroom as crime scene photos and items found on Martin, such as the Arizona drink and Skittles Martin bought at the 7-Eleven, along with his cellphone, were put into evidence. Jurors also saw the semiautomatic handgun Zimmerman used to shoot and kill Martin.

Defense attorney Don West cross-examined Smith, asking her about her husband, who is also a police officer with SPD. He also questioned Smith about the location of Martin's body. Smith said it was moved before the pictures were taken.

West then showed pictures of Zimmerman's injuries and had Smith point out "blood dripping" from Zimmerman's head nearly four hours after encounter with Martin.

The state then called their eighth witness overall-- Selene Bahadoor, an IT analyst for a hospital who lived in the Retreat at Twin Lakes with her sister and niece at the time of the shooting. Prosecutor Bernie de la Rionda questioned his first witness of the trial as Bahadoor said she heard "no" or "ew" coming from her backyard and someone running from south to north toward the path.

Bahadoor said she looked out of the window and didn't see anything so she looked out of her sliding glass door, where she saw two figures and arms flailing. Bahadoor said she saw someone laying in the grass and heard someone come out onto a porch nearby asking the two figures "if he needed to call the cops." She said she recalled the body in the grass being face down when she first saw it seconds after the shooting.

Bahadoor saying she heard running is the first direct evidence to cast doubt on Zimmerman's claim he was "suckerpunched" walking close to the "T" in path at the condo complex.

In cross-examination, O'Mara asked if Bahadoor reviewed her transcript or her testimony with the state before testifying on Tuesday.

"Who was the last person you spoke to about your testimony today?" O'Mara asked, to which Bahadoor said state attorney TC Osteen last Thursday. Bahadoor said she read her transcript of her interview with SPD on her own and can't remember if she said the running noise went from south to north in her interview with police.

"Could this be the first time you mentioned this piece of evidence (running noise from south to north) was today?" O'Mara asked.

"Could be," Bahadoor responded, reading through her deposition and not finding the phrase in her statements to law enforcement.

O'Mara then asked Bahadoor about why she "liked" a "Justice for Trayvon Martin" Facebook page and not a Zimmerman Facebook page. Bahadoor said she has sympathy for both Martin and Zimmerman's families but "the opportunity didn't present itself" for her to "like" a Zimmerman page on Facebook.