Fort Bragg Killings Linked to Drug?

W A S H I N G T O N, Aug. 23 -- The Pentagon is sending a special team to Fort Bragg this weekend to look for a possible link in the deaths of four Army wives. The women were all allegedly killed by their husbands, some of whom took an anti-malaria drug that can have side effects.

On June 11, two days after returning from Afghanistan, Sgt. 1st Class Rigoberto Nieves allegedly shot his wife Teresa and then himself. Over the next five weeks there were three more spouse killings.

Sgt. 1st Class Brandon Floyd, of the elite Delta Force, allegedly shot and killed his wife Andrea and then himself.

Master Sgt. William Wright allegedly strangled his wife Jennifer.

Sgt. Cedric Griffin, the only one who had not been to Afghanistan, allegedly stabbed his estranged wife, Marilyn.

Three of the four Fort Bragg soldiers were special operations servicemen who had recently returned home after tours of duty in Afghanistan.

An Army medical team is now investigating why these crimes happened. One thing they are considering is a possible link between the anti-malaria drug Lariam and the murders.

'Suicidal Behavior, Psychotic Actions'

Jeanne Lese, co-director of Lariam Action USA, says the drug is dangerous. "The most recent study shows that Lariam causes side effects in one-third of the cases," Lese said. "And these side effects can be paranoia, suicidal behavior, psychotic actions."

The Army is skeptical of a connection between the killings and the drug. Army officials say they'll check into a Lariam link but there has been no evidence so far that it might be linked to the Fort Bragg killings.

Colonel Robert DeFraites of the Army Surgeon General's office helped put together the epidemiological consultation team — EPICON — that's going to Fort Bragg on Sunday.

He told ABCNEWS' Good Morning America that the consultation team would be looking for any common thread in the killings, including the drug, but he didn't expect Lariam to be the key.

"Lariam has been used very successfully by the Army and others, many others around the world for the 10 years that its been licensed by the FDA," DeFraites said. "Our experience, in particular, in this case, it really doesn't seem to add up to be that common theme or common thread that we're looking for," he said.