Six days into an investigation, local investigators quoted the Interpol team as saying the grenades were hurled both from above and the ground in the direction of a truck that AL leaders used to address a rally on Bangabandhu Avenue.

Four Interpol members visited the blast site in Dhaka shortly before 6:30am yesterday along with local investigators and scanned the area for about two hours.

Later, the Interpol team checked the truck that was taken to the Police Control Room in Shahbagh after the attack.

It was Interpol's second visit to Bangabandhu Avenue that came after an advance team of Jacqueline Pullums, a US analyst of civilian terrorism, and Jeffry Eyles, an expert on public safety and terrorism affairs, gathered evidence from the scene on August 29.

The four members include Marash Vucilaj, a specialist on public safety and security, and Xin Hu, an expert on terrorism, who joined the advance team on Wednesday.

Pullums who left Bangladesh yesterday afternoon took video footages and photographs to analyse the gory episode that local investigators said cover massive aspects. "If need be, more Interpol experts may come to Dhaka," an investigator said.

"It is not true that the investigation came to a standstill, rather it has made progress. The Interpol team does not want to disclose its findings immediately," he said, asking not to be named.

The Interpol team stayed all day in their hotel room talking to local investigators and analysing evidence they have gathered.

FBI INVESTIGATION
Gibson Wilson, an agent of the Federal Bureau of Investigation (FBI), yesterday continued to probe the grenade attack with the assistance of local investigators in Dhaka.

Inspector General of Police Shahudul Haque told The Daily Star that a local investigation team is working with the FBI agent, without giving further details.

JUDICIAL PROBE
Although the AL declined to talk to the one-member judicial probe commission terming it biased on Thursday, Justice Joynul Abedin, describing the commission as neutral, still expects cooperation from all to make the probe a success.

Justice Abedin sought an appointment with AL President Sheikh Hasina on Thursday that the AL leaders refused saying the AL does not trust the commission.

"I still hope witnesses will help me probe the incident," he said in an interview with BBC Radio yesterday. "I am collecting the accounts of witnesses to find the reasons of the attack."