ānantarika-kamma

the 5 heinous 'actions with immediate destiny' are: 

• parricide, 
• matricide, 
• killing an Arahat (Saint), 
• wounding a Buddha, 
• creating schism in the monks' Order. 

In A.V. 129 it is said:

"There are 5 irascible and incurable men destined to the lower world and to hell, namely: the parricide," etc. About the 5th see A.X. 35, 38. 

With regard to the first crime, it is said in D. 2 that if King Ajātasattu had not deprived his father of life, he would have reached entrance into the path of Stream-entry (App.).