Turkey must give me the evidence it has about the murder of my husband, Jamal Khashoggi | Hanan Khashoggi

It is four years since his killing, but my fight for justice continues. I need details about the plot and the technology that was exploited

On this day four years ago, the world lost a brilliant thought leader, journalist, husband, father and grandfather: Jamal Khashoggi. As his widow, my loss was compounded by the obfuscation of exactly what happened in the days and weeks leading up to his premeditated murder.

Key pieces of evidence that hold these answers rest in Jamal's personal devices: two mobile telephones, a laptop and a tablet. I believe those devices will reveal previously undisclosed details about Jamal's murder that are critical to knowing the full truth and advancing the cause of justice. Those devices are in the possession of the government of Turkey.

Hanan El Khashoggi is the widow of Jamal Khashoggi, a Saudi journalist and Washington Post columnist who was killed on 2 October 2018 at the Saudi consulate in Istanbul, Turkey

Do you have an opinion on the issues raised in this article? If you would like to submit a letter of up to 300 words to be considered for publication, email it to us at guardian.letters@theguardian.com