A former professor at the University of Maryland was arrested Thursday night and charged with attempting to manufacture the mind-altering drug phecychiden or pCP, the Drug Enforcement Administration announced.

DEA officials said they arrested William Negharbom, 61, at a 26-foot trailer that had been converted to a laboratory near Burke Lake Park. They said they seized six pounds of crystals with an estimated street value of $300,000.

Negharbom has been charged with conspiracy to manufacture as well as attempting to manufacture a controlled substance, according to the DEA. Both charges carry maximum penalties of five years in prison and a $15,000 fine or both.

Also arrested in the case, according to DEA officials, were Laslo Bognar, 35, and Patricia Cushman, 18, both of Upperville, Va. They were arrested on Friday in Middleburg and have been charged with conspiracy to manufacture PCP.

According to DEA agent Jack Meyer, Negharbom was graduated from Harvard University with a PhD. in microbiology and has done research for the National Institutes of Health and the Walter Reed Army Medical Center. He has also taught graduate courses at Johns Hopkins University and the University of Maryland, but has been unemployed in recent years.