HILLSBOROUGH COUNTY, Fla. — The family of a man shot and killed outside a Bay area mosque wants answers, but authorities say they don't want to rush the investigation and compromise the case.

The body of 36-year-old Rafat Saeed was laid to rest Tuesday night.

Family and friends at the funeral held big white signs that read "We need justice."

They're upset that the Hillsborough County Sheriff's Office has not arrested and charged the shooter.

The shooting happened early Monday in the parking lot of a Tampa area mosque.

Hillsborough sheriff's spokesman Danny Alvarez says the agency is asking for patience as the investigation continues. 

"We understand what the community wants, we hear the community," he said. "But the process has to take place in the right way to make sure the right person is charged and the right person is brought to justice."

Investigators say an argument between the two men led to the shooting.

Saeed's best friend — Al Bashash — says it's hard to be patient when they know an off-duty deputy was on the scene within moments of the shooting.

There were also witnesses and surveillance video.

"I have a lot of question marks in my head and I won't rest until we get to the bottom of it," he said. 

Bashash also points out that his friend was un-armed.

The shooter has now been on the loose for nearly three days, but Alvarez says they do not consider him a danger to the community.

"At this time, we're evaluating what the charges could be, and we don't feel there's any threat to the community in this case right now," he said. "Could you imagine that if we went to rush to charge someone that shouldn't have been rushed in the first place? That loses trust with the community."

Bashash said he believes in the justice system but still wants more information.

​"What do you do if you lose your loved one? God forbid somebody kills your wife or your son or your daughter, and you heard that they're on the loose? How would you feel?" he said.