translated from Spanish: One year after the death of Martha Arika and Moreno Valle, SCT rules out

The head of the Secretariat of Communications and Transport (SCT), Javier Jiménez Espriú, reiterated that there was no attack that will cause the plane crash in which the then governor of Puebla, Martha Arika Alonso, and Senator Rafael Moreno Valle, died, since no trace of explosives was found during the explosion, nor any bullets.
“No traces of gunpowder, or any bullets or other evidence that could lead to the attack, are integrated into the pieces (of the helicopter).”
He noted that the only thing that was ruled out so far is the attack, but not the mechanical failure or human error.
Reads: PAN accuses the government of “opacity” in the face of the death of Martha Arika Alonso and Rafael Moreno Valle
At a press conference, Jiménez Espriú indicated that so far they no longer have any laboratory tests pending analysis. Now, he explained, the specialists will only be dedicated to analyzing the evidence gathered.
It argued that in the first quarter of 2020 the final result of the investigations into the case will be based on the causes that caused the accident.

? #EnVivo press conference with the media.
➡️ pic.twitter.com/ly9roI42f4 https://t.co/1ndHAWJbdE
— SCT Mexico (@SCT_mx) December 23, 2019

On December 24, 2018, Martha Erika Alonso and her husband, former governor Rafael Moreno Valle, died after the helicopter travelling from Puebla to Mexico City collapsed.
The helicopter in which three other people were travelling collapsed within ten minutes of taking off, killing the five crew members.
The aircraft, XA-BON, fell in the municipality of Coronango, Puebla.
Find out: The keys to the accident in which Martha Erika and Rafael Moreno Valle died
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Original source in Spanish