Instagram, phone directions lead to arrest in fatal shooting of Montgomery Co. man

Montgomery County, Maryland, police investigators believe 31-year-old Mario Samm got directions to the new apartment of an acquaintance shortly before arriving and killing Jahandar Rahman Darvish.

On Dec. 23, 2021, the 25-year-old Darvish was fatally shot in his apartment in the 19300 block of Circle Gate Drive in Germantown. Samm is charged with first-degree murder and use of a firearm during the commission of a violent crime.

According to charging documents, a witness who was with Darvish in his apartment before the shooting heard Darvish providing directions over the phone to his home. The witness said Darvish told him they might know the acquaintance who would soon arrive because they were all friends on Instagram.

Darvish, Samm and the witness hung out for under thirty minutes before Darvish and Samm argued, and Samm allegedly shot Darvish.

Montgomery County crime scene investigators got a search warrant and collected several .40 caliber shell casings to be submitted for DNA analysis. Another witness photographed the suspect driving a newer model GMC SUV.

The witness also told investigators the acquaintance’s Instagram accounts, which detectives traced to Samm.

On Dec. 28, Samm was arrested at his parents’ home in Frederick.

According to police, during a search of Samm’s phone, investigators determined he had called Darvish’s phone during the time period the victim was providing directions to his new apartment.

Samm waived a bond hearing in Frederick and will make his first court appearance in Montgomery County in the next few days.

Neal Augenstein

Neal Augenstein has been a general assignment reporter with WTOP since 1997. He says he looks forward to coming to work every day, even though that means waking up at 3:30 a.m.

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