携わる たずさわる -to be mixed up in something, to participate or concerned with  something. ( in the internet business/ a job with computers/ involved in a hijacking incident) (AA)

関わる かかわる: same but only with a bad meaning (get caught up in a life of crime/ a scandal / associate with lowlifes)

 絡む:からむ: to get entangled in (a problem) (A)

絡まる:からまる: karamu / karamaru ? get entangled