(CNN) -- The defense for Oscar Pistorius used the final day of closing arguments in a South African courtroom Friday to painstakingly go through a time line of the night he killed his girlfriend, revisiting phone records and witness testimony to back his version of events. The second and last day of closing arguments caps months of proceedings that have seen the Olympic sprinter gag, vomit and break down in heaving sobs. The judge will consider her verdict over the next five weeks and announce it next month, she said. Pistorius sent a message to supporters through his Twitter account at the end of court Friday: "Thank you to my loved ones and those that have been there for me, who have picked me up and helped me through everything. "
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NEW: Pistorius verdict set to be announced on September 11, 2014
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Pistorius shot dead his girlfriend Reeva Steencamp on Valentine's Day last year
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Defense attorney alleges the state made mistakes
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Prosecutor calls Olympian an "appalling" witness
Nicknamed "@placeholder" for the bladelike lower-leg prostheses he wears on the track, Pistorius has always admitted that he killed Steenkamp.