According to the Maricopa County Sheriff's Office, a 27-year-old driver who hit and killed four people in Fountain Hills was driving recklessly, speeding and using his phone prior to the collisions on March 13.

Alex Bashaw, 27, is being charged with four counts of manslaughter and is awaiting extradition from Ohio to Phoenix. His bond is set at $750,000.

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MCSO said Bashaw was driving a 1998 Ford Explorer around 9:12 a.m. on March 13 heading northbound in the curb lane of Saguaro Boulevard approaching Palisades Boulevard.

[ORIGINAL STORY: 3 hit, killed by car that jumped curb in Fountain Hills]

MCSO said he was traveling at a minimum speed of 53 mph in a posted 35 mph speed limit.

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After failing to negotiate the roadway's slight curve, Bashaw hopped the curb and struck 60-year-old Patti Doornbos and 72-year-old Ronald Doornbos. MCSO said Patti and Ronald were walking northbound on the sidewalk and were roughly 40 feet south of the intersection when struck.

[MUG SHOT: 27-year-old Alex Bashaw]

MCSO said investigators determined Bashaw was traveling a minimum speed range of 40 to 43 mph when he struck the two.

Bashaw then returned to the roadway, entering the intersection and hitting 72-year-old Robert Bonta and 71-year-old Karen Bonta.

[RELATED: MCSO: Man accused of hitting & killing 4 people in Fountain Hills indicted, arrested]

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MCSO said Robert and Karen were both legally walking westbound in the intersection's south crosswalk when they were struck. Bashaw's vehicle eventually came to a rest approximately 23 feet northwest of where Robert and Karen were struck.

Patti, Robert and Karen died at the scene. Ronald was placed in a local Valley hospital before being taken to a hospital in Canada where he died of his injuries in June.

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[RELATED: MCSO IDs 4 victims hit by SUV in Fountain Hills]

Bashaw was examined at the scene and was found to not be impaired. However, MCSO said Bashaw was found to have a history of drug use.

During his interview, Bashaw stated he looked down while driving and did not know why he drove off the road. After hitting the curb, Bashaw said "he saw the people on the sidewalk and he steered to the left to avoid them."

[RELATED: Sisters remember Canadian woman hit, killed by driver in Fountain Hills]

MCSO said Bashaw jumped out of his vehicle after hitting the pedestrians and began CPR.

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He told investigators that he was not using his cellphone at the time of the collision and was going 33 to 35 mph. However, MCSO said Bashaw "was involved with his cell phone within seconds of the first pedestrian collision."

After obtaining a search warrant, data from Bashaw's cellphone showed he received a call at 9:11 a.m., which lasted 55 seconds.

[READ MORE: Fourth victim dies months after driver jumps curb and strikes Canadian visitors in Fountain Hills]

MCSO determined Bashaw was driving recklessly based on the following violations:

A speed not reasonable and prudent. Failing to stay in one traffic lane. Driving on a sidewalk. Failing to stop for a red traffic signal. Pedestrian right of way at a crosswalk.

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