Differing accounts of who has been involved – and in what capacity — are at the heart of the trial Sigfredo Garcia and Katherine Magbanua for the 2014 murder of FSU law professor Dan Markel.

Luis Rivera earlier pleaded guilty and has already been sentenced for his role in Markel's death.

Garcia and Magbanua are currently on trial, while family members of Markel's ex-wife, Wendi Adelson, continue to be discussed during the trial but have not been charged.

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During testimony, Tallahassee Police Sgt. Chris Corbett said — according to GPS locations for their phones — Rivera and Garcia arrived in Tallahassee just after midnight on July 17, a day before Markel was killed. Records showed registration for a hotel room in Rivera's name at Budget Inn on Tennessee Street that night, too.

The following does not account for so-called "burner" phones, text messages or other related communication. However, this is what authorities laid out in court regarding the timing of such calls on the day of the murder.

12:01 a.m.: Katherine Magbanua calls Sigfredo Garcia

The call lasts for 1 minute and 12 seconds.

12:07 a.m.: Charlie Adelson calls Katherine Magbanua

The call lasts for 3 minutes and 42 seconds.

12:34 a.m.: Katherine Magbanua calls Charlie Adelson

The call lasts for 53 seconds.

1:02 a.m.: Charlie Adelson calls his mother Donna Adelson

The call has no duration, meaning Donna Adelson did not pick up the call and it did not go to voicemail.

1:03 a.m.: Charlie Adelson calls Katherine Magbanua

The call lasts for 20 minutes and 7 seconds.

8:09 a.m.: Wendi Adelson calls her mother Donna Adelson

The call lasts for 34 seconds.

9:12 a.m.: Charlie Adelson calls his sister Wendi Adelson

The call lasts for 29 seconds.

9:19 a.m.: Wendi Adelson calls her brother Charlie Adelson

The call lasts for 18 minutes and 17 seconds.

During this time frame, authorities say a Toyota Prius with Rivera and Garcia in it was seen on surveillance video at Premier Health & Fitness. Both their phones were also pinged to show them at that location, where Markel was working out.

9:38 a.m.: Charlie Adelson calls his mother, Donna Adelson

The call lasts for 30 seconds.

9:57 a.m.: Charlie Adelson calls Katherine Magbanua

The call lasts for 25 seconds.

9:58 a.m.: Katherine Magbanua calls Charlie Adelson

The call lasts for 13 seconds.

9:58 a.m.: Charlie Adelson calls Katherine Magbanua

The call lasts for 7 minutes and 7 seconds.

10:06 a.m.: Charlie Adelson calls his sister Wendi Adelson

The call lasts for 11 seconds.

10:07 a.m.: Katherine Magbanua calls Charlie Adelson

The call lasts for 1 minute and 6 seconds.

10:08 a.m.: Katherine Magbanua calls Charlie Adelson

The call lasts for 9 seconds.

10:09 a.m.: Charlie Adelson calls Katherine Magbanua

The call lasts for 6 minutes and 3 seconds.

Authorities say Dan Markel was shot and killed in his car in his garage before 11 a.m. An initial 911 call was made around 11:02 a.m.

11:06 a.m.: Donna Adelson calls her son Charlie Adelson

The call lasts for 6 seconds.

11:22 a.m.: Charlie Adelson calls his mother Donna Adelson

The call lasts for 7 minutes and 17 seconds.

11:30 a.m.: Charlie Adelson calls Katherine Magbanua

The call lasts for 34 seconds.

11:42 a.m.: Wendi Adelson calls Dan Markel

The call is not answered but is listed as lasting for 28 seconds.

11:30 a.m.: Charlie Adelson calls Katherine Magbanua

The call lasts for five minutes and four seconds.

12:30 p.m.: Sigfredo Garcia calls Katherine Magbanua

The call goes to voicemail, lasting for 20 seconds.

12:30 p.m.: Katherine Magbanua calls Sigfredo Garcia

The call lasts for 44 seconds. Authorities say the call was made on the road on Garcia and Rivera's drive back to Miami. Records show Rivera made a withdrawal of $40 at an ATM in Pembroke Pines, a suburb of Fort Lauderdale, at 6:46 p.m.

7:10 p.m.: Sigfredo Garcia call Katherine Magbanua

The call lasts for 1 minute and 13 seconds. Authorities say the call was made near Rivera's home in Miami.

8:05 p.m.: Sigfredo Garcia calls Katherine Magbanua

The call lasts for 1 minute and 12 seconds.

8:36 p.m.: Charlie Adelson calls Katherine Magbanua

The call lasts for 3 minutes and 12 seconds.

8:37 p.m.: Sigfredo Garcia call Katherine Magbanua

The call goes to voicemail, lasting for 28 seconds.

8:36 p.m.: Katherine Magbanua calls Sigfredo Garcia

The call lasts for 4 minutes and 9 seconds.

9:20 p.m.: Katherine Magbanua calls Sigfredo Garcia

The call lasts for 1 minute and 13 seconds.

9:22 p.m.: Sigfredo Garcia calls Katherine Magbanua

The call lasts for 54 seconds.

9:42 p.m.: Katherine Magbanua calls Charlie Adelson

The call lasts for 34 seconds.

9:46 p.m.: Katherine Magbanua calls Sigfredo Garcia

The call lasts for 1 minute and 15 seconds.

10:12 p.m.: Charlie Adelson calls Katherine Magbanua

The call goes to voicemail, lasting for 35 seconds.

10:20 p.m.: Katherine Magbanua calls Charlie Adelson

The call lasts for 1 minute and 56 seconds.

Data source: Tallahasse Police Department, testimony of Sgt. Chris Corbett during Dan Markel murder trial, October 3, 2019

Nate Chute is a producer with the USA Today Network. Follow him on Twitter at @nchute.