The South Jakarta Police stated that the results of various tests and examinations regarding the deadly crash in Pondok Indah, South Jakarta, which killed four people, would be revealed on Monday.
South Jakarta Police chief Sr. Comr. Wahyu Hadiningrat said on Friday evening that the police had run various investigations, including blood and urine tests, psychological tests, forensic laboratory tests as well as traffic accident analyses.
"All the tests have been completed and we are still waiting for the result," he said, adding that the results were expected to come out on Monday.
He said the police also had questioned two more witnesses over the weekend, including Muhammad Arifin, a victim of the crash. To date, police had questioned nine people related to the accident.
"According to Arifin, he was hit from behind in the first crime site and saw that the Mitsubishi Outlander Sport driven by [suspect] Christopher Daniel Sjarief, 23, did not stop and was speeding up instead," Wahyu said.
Although the Jakarta Police had previously revealed that Christopher was under the influence of lysergic acid diethylamide (LSD) when he was driving, Wahyu said he preferred to wait for the laboratory result from the National Narcotics Agency (BNN).
"We report the results based on the test, not the testimony," he said.
Meanwhile, Christopher's lawyer Agus Salim said the family was trying to bring Christopher to a hospital to have a thorough medical examination. The suspect was now detained at the Jakarta Police traffic division office in Pancoran, South Jakarta.
"His head is still hurt while his bruises are getting better," Agus said on Saturday, as quoted by tempo.co.
He said previously his client was only brought to the hospital once.
Agus said Christopher did not remember the accident. He said his client told him that he was dozing off in the car and woke up when he was being beaten by locals.
According to the police, the suspect had been with his friend, Muhammad Ali, at Pacific Place shopping mall in South Jakarta on Tuesday evening before the accident took place. They later left in Ali's car, driven by Ahmad Sandi. However, on the way home, Ali got out and asked Ahmad to drive Christopher to his house in Pondok Indah.
Ahmad said that night he was still driving the car when Christopher, who sat in the second row, mumbled some words. "He said, 'Believe me sir, believe me sir," several times," he said, as quoted by tempo.co on Thursday evening.
Ahmad said Christopher suddenly strangled his neck when he received a phone call from Ali. The suspect took Ahmad's phone and threw it away.
When he got out of the car to get his cell phone, Christopher suddenly drove the car and went away, he said.
Christopher lost control of the car on Jl. Sultan Iskandar Muda in South Jakarta and crashed into two motorcyclists in the congested street.
He allegedly continued to speed up and hit two cars and two other motorcyclists 500 meters from the initial crash.
Wisnu Anggoro, Mustopa and Mahyudi Herman were killed at the scene, while First Insp. Batang Oenang later died at Fatmawati Hospital in South Jakarta. Two people are also in critical condition and two others were injured in the accident.
The police have charged Christopher under articles 311 and 312 of Law No. 22/2009 on traffic and land transportation, which carries a maximum sentence of 12 years imprisonment.